diff --git a/stacks/vieter.yml b/stacks/vieter.yml
index 90fae72..999646d 100644
--- a/stacks/vieter.yml
+++ b/stacks/vieter.yml
@@ -48,6 +48,8 @@ services:
       - 'VIETER_LOG_LEVEL=DEBUG'
       - 'VIETER_ADDRESS=https://arch.r8r.be'
       - 'VIETER_MAX_CONCURRENT_BUILDS=2'
+      # 1AM UTC+2
+      - 'VIETER_GLOBAL_SCHEDULE=0 23'
     secrets:
       - vieter_api_key
     volumes: