diff --git a/Dockerfile b/Dockerfile
index 0acf16b..0635cff 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine
+FROM alpine:latest
 
 RUN apk add --no-cache curl bash python3 py3-pip \
  && pip3 install 'radicale<3' passlib