diff --git a/Dockerfile b/Dockerfile
index 19e2576..5cd18a8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM rust:1.71.0-alpine3.18
 
-ENV deny_version="0.14.19"
+ENV deny_version="0.14.21"
 
 RUN set -eux; \
     apk update; \