diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index da0e461..909c063 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,9 +18,9 @@ jobs:
           - postgres: 14
             os: ubuntu-22.04
           - postgres: 13
-            os: ubuntu-22.04
+            os: ubuntu-20.04
           - postgres: 12
-            os: ubuntu-22.04
+            os: ubuntu-20.04
 
     steps:
       - uses: actions/checkout@v4