diff --git a/.github/workflows/c++-code-formatting.yml b/.github/workflows/c++-code-formatting.yml
index d1541103..2ac670da 100644
--- a/.github/workflows/c++-code-formatting.yml
+++ b/.github/workflows/c++-code-formatting.yml
@@ -28,7 +28,7 @@ jobs:
     name: clang-format
     # Keep the clang-format version synced with the one installed by aliBuild,
     # (see https://github.com/alisw/alidist/blob/master/clang.sh).
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     steps:
       - name: Checkout code
@@ -46,11 +46,11 @@ jobs:
           DEBIAN_FRONTEND: noninteractive
         run: |
           sudo apt update
-          sudo apt install -y clang-format-15
+          sudo apt install -y clang-format-18
           sudo update-alternatives --install /usr/bin/clang-format \
-            clang-format /usr/bin/clang-format-15 100
+            clang-format /usr/bin/clang-format-18 100
           sudo update-alternatives --install /usr/bin/git-clang-format \
-            git-clang-format /usr/bin/git-clang-format-15 100
+            git-clang-format /usr/bin/git-clang-format-18 100
 
       # We need to fetch the PR's head commit to base our cleanup commit on.
       - name: Fetch PR branch
diff --git a/.github/workflows/check-workflows.yml b/.github/workflows/check-workflows.yml
index 23f786e1..91af27aa 100644
--- a/.github/workflows/check-workflows.yml
+++ b/.github/workflows/check-workflows.yml
@@ -35,7 +35,7 @@ jobs:
           echo ~/bin >> "$GITHUB_PATH"
         env:
           ACTIONLINT_URL: |-
-            https://github.com/rhysd/actionlint/releases/download/v1.6.26/actionlint_1.6.26_linux_amd64.tar.gz
+            https://github.com/rhysd/actionlint/releases/download/v1.7.1/actionlint_1.7.1_linux_amd64.tar.gz
 
       - name: Check GitHub workflows
         run: |