diff --git a/.github/workflows/build_test_deploy.yml b/.github/workflows/build_test_deploy.yml
index 917d65de05b192f..9fd2952c873f4d2 100644
--- a/.github/workflows/build_test_deploy.yml
+++ b/.github/workflows/build_test_deploy.yml
@@ -617,7 +617,7 @@ jobs:
 
   testFirefox:
     name: Test Firefox (production)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: [build, build-native-test]
     timeout-minutes: 10
     env:
@@ -652,7 +652,7 @@ jobs:
 
   testSafari:
     name: Test Safari (production)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: [build, build-native-test]
     timeout-minutes: 15
     env: