diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index a9f6a74..2861327 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -1,6 +1,8 @@
 on:
   push:
   pull_request:
+  schedule:
+    - cron: '0 0 * * 1'  # every Monday
 
 name: Run Tox tests