diff --git a/.ci/ci_auto.yml b/.ci/ci_auto.yml
index 39542271a..4b0fba8ef 100644
--- a/.ci/ci_auto.yml
+++ b/.ci/ci_auto.yml
@@ -5,7 +5,9 @@ pr: none
 schedules:
 # Use https://crontab.guru/#0_8_*_*_* to compute crontab expression
 # Run signed build, with limited signing cert, every day at 9 am
-- cron: 0 9 * * *
+# - cron: 0 9 * * *
+# Temporary schedule to run every 30 minutes, to investigate test failures
+- cron: "*/30 * * * *"
   branches:
     include:
     - refs/heads/master