diff --git a/Dockerfile b/Dockerfile
index 4d35d1b..1dbc4ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
 FROM alpine:latest
 
-RUN apk --update add \
+RUN apk upgrade --update-cache --available && \
+    apk add \
       git \
       openssh && \
     rm -rf /var/lib/apt/lists/* && \