diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index e0c8d13..587168d 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -5,11 +5,13 @@ on:
     branches: [main, master]
   pull_request:
     branches: [main, master]
+  schedule:
+    - cron: '30 5 1 * *'
 
 name: R-CMD-check
 
 env:
-  R_BIOC_VERSION: 3.16
+  R_BIOC_VERSION: 3.18
 
 jobs:
   R-CMD-check:
diff --git a/.github/workflows/revdepcheck.yml b/.github/workflows/revdepcheck.yml
index bea2db5..c850077 100644
--- a/.github/workflows/revdepcheck.yml
+++ b/.github/workflows/revdepcheck.yml
@@ -39,6 +39,8 @@ on:
       - "!**revdepcheck.yml"
       - "**.R[dD]ata"
       - "**.Rpro*"
+  schedule:
+    - cron: '30 5 1 * *'
 
 name: revdep-check