diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 83da912ab..2fb466c58 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -131,12 +131,14 @@ jobs:
       matrix:
         include:
           - platform: linux-arm
+            distro: buster
             run_on_arch: armv6
             nodejs_arch: armv6l
             nodejs_hostname: unofficial-builds.nodejs.org
             nodejs_version: "18.17.0"
             nodejs_version_major: 18
           - platform: linux-s390x
+            distro: bullseye
             run_on_arch: s390x
             nodejs_arch: s390x
             nodejs_hostname: nodejs.org
@@ -147,7 +149,7 @@ jobs:
       - uses: uraimo/run-on-arch-action@v2
         with:
           arch: ${{ matrix.run_on_arch }}
-          distro: buster
+          distro: ${{ matrix.distro }}
           env: |
             prebuild_upload: "${{ startsWith(github.ref, 'refs/tags/') && secrets.GITHUB_TOKEN || '' }}"
           run: |
diff --git a/docs/install.md b/docs/install.md
index 6dc67aa5b..65a1a2fe7 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -45,7 +45,7 @@ Ready-compiled sharp and libvips binaries are provided for use on the most commo
 * macOS ARM64
 * Linux ARM (glibc >= 2.28)
 * Linux ARM64 (glibc >= 2.26, musl >= 1.2.2)
-* Linux s390x (glibc >= 2.28)
+* Linux s390x (glibc >= 2.31)
 * Linux x64 (glibc >= 2.26, musl >= 1.2.2, CPU with SSE4.2)
 * Windows x64
 * Windows x86
diff --git a/npm/linux-s390x/package.json b/npm/linux-s390x/package.json
index 58aa812c8..a9a34dd76 100644
--- a/npm/linux-s390x/package.json
+++ b/npm/linux-s390x/package.json
@@ -33,7 +33,7 @@
     "npm": ">=9.6.5",
     "yarn": ">=3.2.0",
     "pnpm": ">=7.1.0",
-    "glibc": ">=2.28"
+    "glibc": ">=2.31"
   },
   "os": [
     "linux"