diff --git a/Dockerfile b/Dockerfile
index 764e465..c37ada7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/element-hq/matrix-authentication-service:1.14.0 AS mas-cli
+FROM ghcr.io/element-hq/matrix-authentication-service:1.21.0 AS mas-cli
 
 FROM debian:trixie-slim