diff --git a/Dockerfile b/Dockerfile
index 7feaa81..651a26a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -35,6 +35,10 @@ VOLUME ["/output"]
 # nicht als root laufen
 USER appuser
 
+#update
+sudo apt update && sudo apt upgrade -y
+
+
 # Healthcheck
 HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
   CMD test -s /output/output.txt || exit 1