diff --git a/.github/workflows/runtest.yaml b/.github/workflows/runtest.yaml
index a4abe51c..4e68d14e 100644
--- a/.github/workflows/runtest.yaml
+++ b/.github/workflows/runtest.yaml
@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         compiler: [AC6, CLANG, GCC]
-    runs-on: ubuntu-latest    
+    runs-on: ubuntu-22.04    
 
     steps:
       - name: Checkout