diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 22318cb..4728f30 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -5,7 +5,7 @@ on: [pull_request, push]
 jobs:
   build:
     name: CI
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix: