diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index a0b54d2a3..236047193 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -67,7 +67,7 @@ jobs:
       fail-fast: false
       max-parallel: 3
       matrix:
-        os: ubuntu-22.04
+        os: [ubuntu-22.04]
         python-version: ["3.9", "3.10", "3.11"]
         include:
           # psycopg2-binary doesn't have a precompiled wheel for python 3.9 for macos-14