diff --git a/.github/workflows/r_ubuntu.yaml b/.github/workflows/r_ubuntu.yaml
index 799447ed..1699c450 100644
--- a/.github/workflows/r_ubuntu.yaml
+++ b/.github/workflows/r_ubuntu.yaml
@@ -11,9 +11,13 @@ on:
 jobs:
   R-CMD-check:
     runs-on: ubuntu-20.04
+
+    strategy:
+      matrix:
+        r-version: ['4.3.2', '4.2.0', '4.2.1'] # Ensure these versions are available
+
     steps:
-      # - name: Checkout repository
-      #   uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       # Cache R dependencies
       - name: Cache R dependencies