diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 17312a1d..f6bc90d7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,11 +30,12 @@ jobs:
 
   test:
     name: Tests
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         node: ['^8.12', '10', '12']
+        os: [ubuntu-latest, windows-latest, macOS-latest]
 
     steps:
     - uses: actions/checkout@v1