diff --git a/changelog.d/11253.misc b/changelog.d/11253.misc
new file mode 100644
index 0000000000..71c55a2751
--- /dev/null
+++ b/changelog.d/11253.misc
@@ -0,0 +1 @@
+Make minor correction to the type of `auth_checkers` callbacks.
diff --git a/docs/modules/password_auth_provider_callbacks.md b/docs/modules/password_auth_provider_callbacks.md
index 0de60b128a..e53abf6409 100644
--- a/docs/modules/password_auth_provider_callbacks.md
+++ b/docs/modules/password_auth_provider_callbacks.md
@@ -11,7 +11,7 @@ registered by using the Module API's `register_password_auth_provider_callbacks`
 _First introduced in Synapse v1.46.0_
 
 ```python
- auth_checkers: Dict[Tuple[str,Tuple], Callable]
+auth_checkers: Dict[Tuple[str, Tuple[str, ...]], Callable]
 ```
 
 A dict mapping from tuples of a login type identifier (such as `m.login.password`) and a
diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index d508d7d32a..60e59d11a0 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -1989,7 +1989,9 @@ class PasswordAuthProvider:
         self,
         check_3pid_auth: Optional[CHECK_3PID_AUTH_CALLBACK] = None,
         on_logged_out: Optional[ON_LOGGED_OUT_CALLBACK] = None,
-        auth_checkers: Optional[Dict[Tuple[str, Tuple], CHECK_AUTH_CALLBACK]] = None,
+        auth_checkers: Optional[
+            Dict[Tuple[str, Tuple[str, ...]], CHECK_AUTH_CALLBACK]
+        ] = None,
     ) -> None:
         # Register check_3pid_auth callback
         if check_3pid_auth is not None: