diff --git a/.github/workflows/core.yml b/.github/workflows/core.yml
index 8c8313088e..36a11a7d30 100644
--- a/.github/workflows/core.yml
+++ b/.github/workflows/core.yml
@@ -225,7 +225,7 @@ jobs:
 
   compat:
     name: Compatibility tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
       - name: Set up Conda environment