diff --git a/synapse/replication/http/account_data.py b/synapse/replication/http/account_data.py
index 560973b916..b16f151524 100644
--- a/synapse/replication/http/account_data.py
+++ b/synapse/replication/http/account_data.py
@@ -49,7 +49,7 @@ class ReplicationAddUserAccountDataRestServlet(ReplicationEndpoint):
 
     NAME = "add_user_account_data"
     PATH_ARGS = ("user_id", "account_data_type")
-    CACHE = False
+    CACHE = True
 
     def __init__(self, hs: "HomeServer"):
         super().__init__(hs)