diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 594caa4..2588fb7 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -4,6 +4,9 @@ on:
   push:
     branches: [main, master]
   pull_request:
+    branches: [main, master]
+  schedule:
+    - cron: '00 09 * * 0'
   workflow_dispatch:
 
 name: R-CMD-check