diff --git a/src/main/resources/challenges/challenge-51/Dockerfile_challenge51 b/src/main/resources/challenges/challenge-51/Dockerfile_challenge51
index ec6037cc2..ae9b2d668 100644
--- a/src/main/resources/challenges/challenge-51/Dockerfile_challenge51
+++ b/src/main/resources/challenges/challenge-51/Dockerfile_challenge51
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.11
+# syntax=docker/dockerfile:1.12
 FROM debian:stable-slim
 
 RUN --mount=type=secret,id=db_user \