diff --git a/.github/workflows/exact_riemann.yml b/.github/workflows/exact_riemann.yml
index 996684ba78..f8ebe724fe 100644
--- a/.github/workflows/exact_riemann.yml
+++ b/.github/workflows/exact_riemann.yml
@@ -3,7 +3,7 @@ name: exact Riemann
 on: [pull_request]
 jobs:
   exact_riemann:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
         with:
diff --git a/.github/workflows/gpu_action.yml b/.github/workflows/gpu_action.yml
index b09bccd11d..be931d63bc 100644
--- a/.github/workflows/gpu_action.yml
+++ b/.github/workflows/gpu_action.yml
@@ -8,7 +8,7 @@ concurrency:
 
 jobs:
   gpu-compilation:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
         with: