diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f0b999..2ad22c0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
       matrix:
         # macos-14 builds with AppleClang 15 (Xcode 15.4), the oldest compiler CoreTrace builds
         # the analyzer with; macos-latest has a newer one (#228).
-        os: [ubuntu-latest, macos-latest, macos-14]
+        os: [ubuntu-24.04, macos-latest, macos-14]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/test-ci-integration.yml b/.github/workflows/test-ci-integration.yml
index 7531fe9..6a9758d 100644
--- a/.github/workflows/test-ci-integration.yml
+++ b/.github/workflows/test-ci-integration.yml
@@ -20,7 +20,7 @@ jobs:
   # =================================================================
   test-github-action:
     name: Test GitHub Action
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: read
       security-events: write
@@ -83,7 +83,7 @@ jobs:
   # =================================================================
   test-docker:
     name: Test Docker Image
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: read
 
@@ -177,7 +177,7 @@ jobs:
   # =================================================================
   test-consumer-project:
     name: Test Consumer Project
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: read