diff --git a/src/main/java/ru/nanit/limbo/LimboConstants.java b/src/main/java/ru/nanit/limbo/LimboConstants.java
index a4f7929..f5fddf5 100644
--- a/src/main/java/ru/nanit/limbo/LimboConstants.java
+++ b/src/main/java/ru/nanit/limbo/LimboConstants.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo;
 
 public final class LimboConstants {
diff --git a/src/main/java/ru/nanit/limbo/NanoLimbo.java b/src/main/java/ru/nanit/limbo/NanoLimbo.java
index 313ae36..0ea15d4 100644
--- a/src/main/java/ru/nanit/limbo/NanoLimbo.java
+++ b/src/main/java/ru/nanit/limbo/NanoLimbo.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo;
 
 import ru.nanit.limbo.server.LimboServer;
diff --git a/src/main/java/ru/nanit/limbo/configuration/LimboConfig.java b/src/main/java/ru/nanit/limbo/configuration/LimboConfig.java
index 17cef9f..fc71827 100644
--- a/src/main/java/ru/nanit/limbo/configuration/LimboConfig.java
+++ b/src/main/java/ru/nanit/limbo/configuration/LimboConfig.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.configuration;
 
 import org.spongepowered.configurate.ConfigurationNode;
diff --git a/src/main/java/ru/nanit/limbo/configuration/SocketAddressSerializer.java b/src/main/java/ru/nanit/limbo/configuration/SocketAddressSerializer.java
index f5ff626..18e737e 100644
--- a/src/main/java/ru/nanit/limbo/configuration/SocketAddressSerializer.java
+++ b/src/main/java/ru/nanit/limbo/configuration/SocketAddressSerializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.configuration;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
diff --git a/src/main/java/ru/nanit/limbo/connection/ClientChannelInitializer.java b/src/main/java/ru/nanit/limbo/connection/ClientChannelInitializer.java
index 879eca1..f564760 100644
--- a/src/main/java/ru/nanit/limbo/connection/ClientChannelInitializer.java
+++ b/src/main/java/ru/nanit/limbo/connection/ClientChannelInitializer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.connection;
 
 import io.netty.channel.Channel;
diff --git a/src/main/java/ru/nanit/limbo/connection/ClientConnection.java b/src/main/java/ru/nanit/limbo/connection/ClientConnection.java
index 45f4156..8da4a32 100644
--- a/src/main/java/ru/nanit/limbo/connection/ClientConnection.java
+++ b/src/main/java/ru/nanit/limbo/connection/ClientConnection.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.connection;
 
 import com.grack.nanojson.JsonArray;
diff --git a/src/main/java/ru/nanit/limbo/connection/GameProfile.java b/src/main/java/ru/nanit/limbo/connection/GameProfile.java
index 754eebd..7d3dde7 100644
--- a/src/main/java/ru/nanit/limbo/connection/GameProfile.java
+++ b/src/main/java/ru/nanit/limbo/connection/GameProfile.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.connection;
 
 import java.util.UUID;
diff --git a/src/main/java/ru/nanit/limbo/connection/pipeline/PacketDecoder.java b/src/main/java/ru/nanit/limbo/connection/pipeline/PacketDecoder.java
index f4510bd..cdc0702 100644
--- a/src/main/java/ru/nanit/limbo/connection/pipeline/PacketDecoder.java
+++ b/src/main/java/ru/nanit/limbo/connection/pipeline/PacketDecoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.connection.pipeline;
 
 import io.netty.buffer.ByteBuf;
diff --git a/src/main/java/ru/nanit/limbo/connection/pipeline/PacketEncoder.java b/src/main/java/ru/nanit/limbo/connection/pipeline/PacketEncoder.java
index 65f6803..78e5f4c 100644
--- a/src/main/java/ru/nanit/limbo/connection/pipeline/PacketEncoder.java
+++ b/src/main/java/ru/nanit/limbo/connection/pipeline/PacketEncoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.connection.pipeline;
 
 import io.netty.buffer.ByteBuf;
diff --git a/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntByteDecoder.java b/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntByteDecoder.java
index 624c8f6..2f9a611 100644
--- a/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntByteDecoder.java
+++ b/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntByteDecoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.connection.pipeline;
 
 import io.netty.util.ByteProcessor;
diff --git a/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntFrameDecoder.java b/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntFrameDecoder.java
index 4ea28c7..861fb64 100644
--- a/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntFrameDecoder.java
+++ b/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntFrameDecoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.connection.pipeline;
 
 import io.netty.buffer.ByteBuf;
diff --git a/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntLengthEncoder.java b/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntLengthEncoder.java
index 0a07fd3..940c42f 100644
--- a/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntLengthEncoder.java
+++ b/src/main/java/ru/nanit/limbo/connection/pipeline/VarIntLengthEncoder.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.connection.pipeline;
 
 import io.netty.buffer.ByteBuf;
diff --git a/src/main/java/ru/nanit/limbo/protocol/ByteMessage.java b/src/main/java/ru/nanit/limbo/protocol/ByteMessage.java
index 54c3c00..e3550c3 100644
--- a/src/main/java/ru/nanit/limbo/protocol/ByteMessage.java
+++ b/src/main/java/ru/nanit/limbo/protocol/ByteMessage.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol;
 
 import io.netty.buffer.*;
diff --git a/src/main/java/ru/nanit/limbo/protocol/Packet.java b/src/main/java/ru/nanit/limbo/protocol/Packet.java
index 6ec59a7..3df6dcf 100644
--- a/src/main/java/ru/nanit/limbo/protocol/Packet.java
+++ b/src/main/java/ru/nanit/limbo/protocol/Packet.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol;
 
 import ru.nanit.limbo.protocol.registry.Version;
diff --git a/src/main/java/ru/nanit/limbo/protocol/PacketIn.java b/src/main/java/ru/nanit/limbo/protocol/PacketIn.java
index 639d0c2..ed45197 100644
--- a/src/main/java/ru/nanit/limbo/protocol/PacketIn.java
+++ b/src/main/java/ru/nanit/limbo/protocol/PacketIn.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol;
 
 import ru.nanit.limbo.protocol.registry.Version;
diff --git a/src/main/java/ru/nanit/limbo/protocol/PacketOut.java b/src/main/java/ru/nanit/limbo/protocol/PacketOut.java
index 78a4a4d..9d7d9c4 100644
--- a/src/main/java/ru/nanit/limbo/protocol/PacketOut.java
+++ b/src/main/java/ru/nanit/limbo/protocol/PacketOut.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol;
 
 import ru.nanit.limbo.protocol.registry.Version;
diff --git a/src/main/java/ru/nanit/limbo/protocol/PacketSnapshot.java b/src/main/java/ru/nanit/limbo/protocol/PacketSnapshot.java
index b6e0cbc..8034c16 100644
--- a/src/main/java/ru/nanit/limbo/protocol/PacketSnapshot.java
+++ b/src/main/java/ru/nanit/limbo/protocol/PacketSnapshot.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol;
 
 import ru.nanit.limbo.protocol.registry.Version;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/PacketHandshake.java b/src/main/java/ru/nanit/limbo/protocol/packets/PacketHandshake.java
index c98b986..31c475b 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/PacketHandshake.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/PacketHandshake.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketDisconnect.java b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketDisconnect.java
index 2981326..2ba8b85 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketDisconnect.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketDisconnect.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.login;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginPluginRequest.java b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginPluginRequest.java
index 8a45c99..68b80c4 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginPluginRequest.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginPluginRequest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.login;
 
 import io.netty.buffer.ByteBuf;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginPluginResponse.java b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginPluginResponse.java
index 1059a4b..126ca29 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginPluginResponse.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginPluginResponse.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.login;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginStart.java b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginStart.java
index 3f768fa..4c8ea4c 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginStart.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginStart.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.login;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginSuccess.java b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginSuccess.java
index 9acd9a4..61999ba 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginSuccess.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/login/PacketLoginSuccess.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.login;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketBossBar.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketBossBar.java
index 6addcfe..8361ad2 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketBossBar.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketBossBar.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketChatMessage.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketChatMessage.java
index c7b1f1e..ce1756e 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketChatMessage.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketChatMessage.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketDeclareCommands.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketDeclareCommands.java
index c804b51..fa4cf6f 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketDeclareCommands.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketDeclareCommands.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketJoinGame.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketJoinGame.java
index 3417575..0043bc2 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketJoinGame.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketJoinGame.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketKeepAlive.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketKeepAlive.java
index 5c5b79a..a92d63a 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketKeepAlive.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketKeepAlive.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerAbilities.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerAbilities.java
index 5d7fe1d..49e8068 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerAbilities.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerAbilities.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerInfo.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerInfo.java
index 45f5709..9b211bd 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerInfo.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerInfo.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerPositionAndLook.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerPositionAndLook.java
index 4775b7c..c195f49 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerPositionAndLook.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerPositionAndLook.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPluginMessage.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPluginMessage.java
index 84cf640..e11c452 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPluginMessage.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPluginMessage.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleLegacy.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleLegacy.java
index cb7458f..87a9fe8 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleLegacy.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleLegacy.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleSetSubTitle.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleSetSubTitle.java
index 6c7a708..845412a 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleSetSubTitle.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleSetSubTitle.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleSetTitle.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleSetTitle.java
index 764fa5a..8c32716 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleSetTitle.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleSetTitle.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleTimes.java b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleTimes.java
index e9f0c63..5e46dff 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleTimes.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/play/PacketTitleTimes.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.play;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusPing.java b/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusPing.java
index 7ac1d8c..3bc39ee 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusPing.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusPing.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.status;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusRequest.java b/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusRequest.java
index ff3b92e..ce9759c 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusRequest.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusRequest.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.status;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusResponse.java b/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusResponse.java
index df08142..706f986 100644
--- a/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusResponse.java
+++ b/src/main/java/ru/nanit/limbo/protocol/packets/status/PacketStatusResponse.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.packets.status;
 
 import ru.nanit.limbo.protocol.ByteMessage;
diff --git a/src/main/java/ru/nanit/limbo/protocol/registry/State.java b/src/main/java/ru/nanit/limbo/protocol/registry/State.java
index 24aec91..65ab464 100644
--- a/src/main/java/ru/nanit/limbo/protocol/registry/State.java
+++ b/src/main/java/ru/nanit/limbo/protocol/registry/State.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.registry;
 
 import ru.nanit.limbo.protocol.Packet;
diff --git a/src/main/java/ru/nanit/limbo/protocol/registry/Version.java b/src/main/java/ru/nanit/limbo/protocol/registry/Version.java
index bb4d19c..68b5e26 100644
--- a/src/main/java/ru/nanit/limbo/protocol/registry/Version.java
+++ b/src/main/java/ru/nanit/limbo/protocol/registry/Version.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.protocol.registry;
 
 import java.util.HashMap;
diff --git a/src/main/java/ru/nanit/limbo/server/Connections.java b/src/main/java/ru/nanit/limbo/server/Connections.java
index b4bf16b..246fb4a 100644
--- a/src/main/java/ru/nanit/limbo/server/Connections.java
+++ b/src/main/java/ru/nanit/limbo/server/Connections.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.server;
 
 import ru.nanit.limbo.connection.ClientConnection;
diff --git a/src/main/java/ru/nanit/limbo/server/LimboServer.java b/src/main/java/ru/nanit/limbo/server/LimboServer.java
index 12dcb34..554a923 100644
--- a/src/main/java/ru/nanit/limbo/server/LimboServer.java
+++ b/src/main/java/ru/nanit/limbo/server/LimboServer.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.server;
 
 import io.netty.bootstrap.ServerBootstrap;
diff --git a/src/main/java/ru/nanit/limbo/server/data/BossBar.java b/src/main/java/ru/nanit/limbo/server/data/BossBar.java
index b42795b..d77e89d 100644
--- a/src/main/java/ru/nanit/limbo/server/data/BossBar.java
+++ b/src/main/java/ru/nanit/limbo/server/data/BossBar.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.server.data;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
diff --git a/src/main/java/ru/nanit/limbo/server/data/InfoForwarding.java b/src/main/java/ru/nanit/limbo/server/data/InfoForwarding.java
index 711788a..f96869f 100644
--- a/src/main/java/ru/nanit/limbo/server/data/InfoForwarding.java
+++ b/src/main/java/ru/nanit/limbo/server/data/InfoForwarding.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.server.data;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
diff --git a/src/main/java/ru/nanit/limbo/server/data/PingData.java b/src/main/java/ru/nanit/limbo/server/data/PingData.java
index 477deea..435f13e 100644
--- a/src/main/java/ru/nanit/limbo/server/data/PingData.java
+++ b/src/main/java/ru/nanit/limbo/server/data/PingData.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.server.data;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
diff --git a/src/main/java/ru/nanit/limbo/server/data/Position.java b/src/main/java/ru/nanit/limbo/server/data/Position.java
index d28902b..9b6144a 100644
--- a/src/main/java/ru/nanit/limbo/server/data/Position.java
+++ b/src/main/java/ru/nanit/limbo/server/data/Position.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.server.data;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
diff --git a/src/main/java/ru/nanit/limbo/server/data/Title.java b/src/main/java/ru/nanit/limbo/server/data/Title.java
index 3519a25..28f94cd 100644
--- a/src/main/java/ru/nanit/limbo/server/data/Title.java
+++ b/src/main/java/ru/nanit/limbo/server/data/Title.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.server.data;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
diff --git a/src/main/java/ru/nanit/limbo/util/Colors.java b/src/main/java/ru/nanit/limbo/util/Colors.java
index 5dda255..41562e7 100644
--- a/src/main/java/ru/nanit/limbo/util/Colors.java
+++ b/src/main/java/ru/nanit/limbo/util/Colors.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.util;
 
 public final class Colors {
diff --git a/src/main/java/ru/nanit/limbo/util/Logger.java b/src/main/java/ru/nanit/limbo/util/Logger.java
index a7427d3..947aacb 100644
--- a/src/main/java/ru/nanit/limbo/util/Logger.java
+++ b/src/main/java/ru/nanit/limbo/util/Logger.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.util;
 
 import java.time.LocalTime;
diff --git a/src/main/java/ru/nanit/limbo/util/UuidUtil.java b/src/main/java/ru/nanit/limbo/util/UuidUtil.java
index a3868a8..54019a7 100644
--- a/src/main/java/ru/nanit/limbo/util/UuidUtil.java
+++ b/src/main/java/ru/nanit/limbo/util/UuidUtil.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.util;
 
 import java.nio.charset.StandardCharsets;
diff --git a/src/main/java/ru/nanit/limbo/world/Dimension.java b/src/main/java/ru/nanit/limbo/world/Dimension.java
index 15d8750..5b3c815 100644
--- a/src/main/java/ru/nanit/limbo/world/Dimension.java
+++ b/src/main/java/ru/nanit/limbo/world/Dimension.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.world;
 
 import net.kyori.adventure.nbt.CompoundBinaryTag;
diff --git a/src/main/java/ru/nanit/limbo/world/DimensionRegistry.java b/src/main/java/ru/nanit/limbo/world/DimensionRegistry.java
index 8c34880..3479eee 100644
--- a/src/main/java/ru/nanit/limbo/world/DimensionRegistry.java
+++ b/src/main/java/ru/nanit/limbo/world/DimensionRegistry.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2020 Nan1t
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package ru.nanit.limbo.world;
 
 import net.kyori.adventure.nbt.CompoundBinaryTag;