diff --git a/.github/workflows/CI-master_tests.yml b/.github/workflows/CI-master_tests.yml
index a5274529..83eee4df 100644
--- a/.github/workflows/CI-master_tests.yml
+++ b/.github/workflows/CI-master_tests.yml
@@ -9,7 +9,7 @@ on:
         - '.github/**'
   
   schedule:
-    - cron: "5 4 * * SUN"
+    - cron: "5 4 1 * *"
 
   workflow_dispatch: