diff --git a/.github/workflows/pr_build.yml b/.github/workflows/pr_build.yml
index 66c528c7b..5b2149e17 100644
--- a/.github/workflows/pr_build.yml
+++ b/.github/workflows/pr_build.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ ubuntu-latest, macos-latest, windows-latest ]
+        os: [ ubuntu-latest ]
         tox-environment: ["spellcheck", "lint"]
     steps:
       - name: Checkout Contrib Repo @ SHA - ${{ github.sha }}