diff --git a/compose.yml b/compose.yml
index 7d8b2e9..6596131 100644
--- a/compose.yml
+++ b/compose.yml
@@ -7,6 +7,7 @@ services:
       - 5665:5665
     volumes:
       - ./files:/data
+      - /etc/localtime:/etc/localtime:ro
     environment:
       ICINGA2_JOIN_TICKET: ${ICINGA_JOIN_TICKET}
       ICINGA2_PARENT_HOST: ${ICINGA_PARENT_HOST:-icinga.example.com}