diff --git a/.github/workflows/r.yml b/.github/workflows/r.yml
index dfb6818..cc7aa7c 100644
--- a/.github/workflows/r.yml
+++ b/.github/workflows/r.yml
@@ -19,7 +19,7 @@ permissions:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: macos-latest windows-latest 
     strategy:
       matrix:
         r-version: ['3.6.3', '4.1.1']