1 files changed, 3 insertions, 1 deletions
diff --git a/synapse/storage/databases/main/registration.py b/synapse/storage/databases/main/registration.py
index a85867936f..7fd7b0b952 100644
--- a/synapse/storage/databases/main/registration.py
+++ b/synapse/storage/databases/main/registration.py
@@ -1220,7 +1220,9 @@ class RegistrationStore(RegistrationBackgroundUpdateStore):
             desc="record_user_external_id",
         )
 
-    async def user_set_password_hash(self, user_id: str, password_hash: str) -> None:
+    async def user_set_password_hash(
+        self, user_id: str, password_hash: Optional[str]
+    ) -> None:
         """
         NB. This does *not* evict any cache because the one use for this
             removes most of the entries subsequently anyway so it would be