diff --git a/compose.yml b/compose.yml
index 0d504e4..22302cd 100644
--- a/compose.yml
+++ b/compose.yml
@@ -3,7 +3,7 @@ version: "3.8"
 
 services:
   app:
-    image: "matrixdotorg/synapse:latest"
+    image: "matrixdotorg/synapse:v1.9.1"
     volumes:
       - "synapse:/data"
     environment: