diff --git a/docker/Dockerfile b/docker/Dockerfile
index 5c72e07..7f96f09 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -2,7 +2,7 @@ FROM ubuntu:24.04 AS builder
 
 ENV DEBIAN_FRONTEND="noninteractive"
 
-ARG TIMEZONE="Etc/UTC"
+ARG TIMEZONE="${WOW_TIMEZONE}"
 ENV TZ="${TIMEZONE}"
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt/lists,sharing=locked \