diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 56ec651a..ef2701aa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -230,14 +230,14 @@ jobs:
             nodejs_version: "18.17.0"
             nodejs_version_major: 18
           - platform: linux-s390x
-            distro: bullseye
+            distro: bookworm
             run_on_arch: s390x
             nodejs_arch: s390x
             nodejs_hostname: nodejs.org
             nodejs_version: "18.17.0"
             nodejs_version_major: 18
           - platform: linux-ppc64
-            distro: bullseye
+            distro: bookworm
             run_on_arch: ppc64le
             nodejs_arch: ppc64le
             nodejs_hostname: nodejs.org
diff --git a/docs/src/content/docs/install.md b/docs/src/content/docs/install.md
index 41c18714..7afc56c6 100644
--- a/docs/src/content/docs/install.md
+++ b/docs/src/content/docs/install.md
@@ -48,8 +48,8 @@ Ready-compiled sharp and libvips binaries are provided for use on the most commo
 * macOS ARM64
 * Linux ARM (glibc >= 2.31)
 * Linux ARM64 (glibc >= 2.26, musl >= 1.2.2)
-* Linux ppc64 (glibc >= 2.31)
-* Linux s390x (glibc >= 2.31)
+* Linux ppc64 (glibc >= 2.36)
+* Linux s390x (glibc >= 2.36)
 * Linux x64 (glibc >= 2.26, musl >= 1.2.2, CPU with SSE4.2)
 * Windows x64
 * Windows x86
diff --git a/npm/linux-ppc64/package.json b/npm/linux-ppc64/package.json
index b1dacbd6..efac8f0d 100644
--- a/npm/linux-ppc64/package.json
+++ b/npm/linux-ppc64/package.json
@@ -32,7 +32,7 @@
     "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
   },
   "config": {
-    "glibc": ">=2.31"
+    "glibc": ">=2.36"
   },
   "os": [
     "linux"
diff --git a/npm/linux-s390x/package.json b/npm/linux-s390x/package.json
index df654afe..a26cc0c2 100644
--- a/npm/linux-s390x/package.json
+++ b/npm/linux-s390x/package.json
@@ -32,7 +32,7 @@
     "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
   },
   "config": {
-    "glibc": ">=2.31"
+    "glibc": ">=2.36"
   },
   "os": [
     "linux"