diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 623c4317..d0d33d6f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -6,7 +6,10 @@ on: push
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ['ubuntu-20.04', 'windows-latest', 'macOS-latest']
     steps:
       - name: Checkout Forest code from GitHub repo
         uses: actions/checkout@v2