diff --git a/silta/silta.yml b/silta/silta.yml
index 80f4c260b..f98cc70df 100644
--- a/silta/silta.yml
+++ b/silta/silta.yml
@@ -54,3 +54,7 @@ php:
       # In feature environments, run cron jobs very seldom. Adjust as needed.
       # ~ gets replaced with a random digit between 0 and 9 to prevent having all cron jobs at once.
       schedule: '~ 0 1 2 *'
+
+  env:
+    TZ: Europe/Helsinki
+