diff --git a/Dockerfile b/Dockerfile
index 4675826..023aa8d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,6 +2,7 @@
 FROM alpine
 
 # Pakete installieren
+RUN apk update && apk upgrade
 RUN apk add --no-cache build-base curl vim net-tools
 
 # Arbeitsverzeichnis setzen