diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 635e6bf..7dfddf1 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.9", "3.11"]
-      os: [ubuntu-latest, windows-latest]
+        os: [ubuntu-latest, windows-latest]
 
     name: tests_python-${{ matrix.python-version }}
     steps: