diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 0d15df778..c9af36ac8 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,5 +1,5 @@
 name: CI
-on: [push]
+on: push
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -14,7 +14,7 @@ jobs:
 
     services:
       postgres:
-        image: postgres:11.5
+        image: postgres:12.3
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres