diff --git a/Dockerfile b/Dockerfile
index 4f08cc8..ace80a1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine
 WORKDIR /app
-RUN apk add --no-cache tzdata
+RUN apk update && apk add --no-cache tzdata
 COPY ./release /app/
 VOLUME /app/data