diff --git a/azure-pipelines-wheels.yml b/azure-pipelines-wheels.yml
index 77e9cbb95f11a82ea2fce0c5796ca2048abb7362..4e2ecd73d2137fe68dbd8b1a381712b792758fc7 100644
--- a/azure-pipelines-wheels.yml
+++ b/azure-pipelines-wheels.yml
@@ -10,7 +10,7 @@ trigger:
     - requirements_all.txt
 pr: none
 schedules:
-- cron: '0 */8 * * *'
+- cron: '0 */4 * * *'
   displayName: 'daily builds'
   branches:
     include: