diff --git a/Dockerfile b/Dockerfile
index 4d827d2..92e4e98 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG LIBRENMS_VERSION="21.8.0"
+ARG LIBRENMS_VERSION="21.9.0"
 
 FROM crazymax/yasu:latest AS yasu
 FROM crazymax/alpine-s6:3.14-2.2.0.3