diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 8a93978..4322ac2 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -7,10 +7,10 @@ on:
 
 jobs:
   deploy:
-    runs-on: ubuntu-latest # ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        # os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         python-version: ["3.7", "3.8", "3.9", "3.10"]
 
     env: