diff --git a/.github/workflows/sphinx-tuttest.yml b/.github/workflows/sphinx-tuttest.yml
index d338485..9fc2ac8 100644
--- a/.github/workflows/sphinx-tuttest.yml
+++ b/.github/workflows/sphinx-tuttest.yml
@@ -1,6 +1,10 @@
 name: doc-test
 
-on: [push, pull_request]
+on:
+ push:
+ pull_request:
+ schedule:
+  - cron: "0 0 * * *"
 
 jobs:
   test: