diff --git a/Dockerfile b/Dockerfile
index 7eb4239d..71c6b82a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,7 @@ WORKDIR /konova
 
 # Installiere System-Abhängigkeiten
 RUN apt-get update  \
-    && apt-get upgrade  \
+    && apt-get upgrade -y \
     && apt-get install -y --no-install-recommends gdal-bin redis-server nginx \
     && rm -rf /var/lib/apt/lists/*  # Platz sparen