diff --git a/ee/packages/federation-matrix/docker-compose.test.yml b/ee/packages/federation-matrix/docker-compose.test.yml
index 40dbd4e224907..c26816514f8be 100644
--- a/ee/packages/federation-matrix/docker-compose.test.yml
+++ b/ee/packages/federation-matrix/docker-compose.test.yml
@@ -41,7 +41,7 @@ services:
 
   # HomeServer 1 (synapse)
   hs1:
-    image: matrixdotorg/synapse:latest
+    image: matrixdotorg/synapse:v1.157.2
     profiles:
       - test
       - element