diff --git a/compose.mas.yml b/compose.mas.yml
index 4309932..4578d93 100644
--- a/compose.mas.yml
+++ b/compose.mas.yml
@@ -5,7 +5,7 @@ version: "3.8"
 
 services:
   mas:
-    image: ghcr.io/element-hq/matrix-authentication-service:1.27.1
+    image: ghcr.io/element-hq/matrix-authentication-service:1.28.0
     command: ["server", "--config=/etc/mas/config.yaml"]
     environment:
       - DOMAIN