diff --git a/Dockerfile b/Dockerfile
index dcfb32c..8ea041a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,5 @@
 FROM cimg/go:1.22.6-browsers
 
-RUN apk add --no-cache libc6-compat tzdata && \
-    cp /usr/share/zoneinfo/Asia/Tokyo /etc/localtime && \
-    apk del tzdata
-
 ADD ./moneyforward /usr/local/bin/moneyforward
 
 ENTRYPOINT ["/usr/local/bin/moneyforward"]