diff --git a/Dockerfile b/Dockerfile
index 71b77cf9c7c0f594c8873e8539162d95e4568db3..2770085e4b0c69f5e778b4d86ad8bba34ad1c227 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # production container
-FROM nginx:1.21.0-alpine
+FROM nginx:1.21.1-alpine
 
 LABEL maintainer="Mat2 Web Frontend Maintainer <jan.friedli@immerda.ch>"