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 0df50e4..5efa640 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
@@ -18,12 +18,20 @@ public class PacketKeepAlive implements Packet {
 
     @Override
     public void encode(ByteMessage msg, Version version) {
-        msg.writeLong(id);
+        if (version.moreOrEqual(Version.V1_12_2)) {
+            msg.writeLong(id);
+        } else {
+            msg.writeVarInt((int) id);
+        }
     }
 
     @Override
     public void decode(ByteMessage msg, Version version) {
-        this.id = msg.readLong();
+        if (version.moreOrEqual(Version.V1_12_2)) {
+            this.id = msg.readLong();
+        } else {
+            this.id = msg.readVarInt();
+        }
     }
 
 }