diff --git a/docker-compose.yaml b/docker-compose.yaml
index 17c3efd..07e7cad 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -55,6 +55,8 @@ services:
     restart: always
     volumes:
       - /opt/webcontent/tcpwiki:/storage
+    environment:
+      PHP_TIMEZONE: Europe/Zurich
     networks:
       - backend