diff --git a/Dockerfile b/Dockerfile
index 76f271c..9d84c77 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,7 +15,8 @@ RUN   apk --no-cache add \
       curl \
       nodejs \
       npm \
-      supervisor
+      supervisor \
+      tzdata
 
 COPY supervisord.conf /etc/supervisord.conf
 COPY . /crontab-ui