diff --git a/docs/tutorials/new-feature-tutorial.md b/docs/tutorials/new-feature-tutorial.md
index 7d68723ca5..94ca645890 100644
--- a/docs/tutorials/new-feature-tutorial.md
+++ b/docs/tutorials/new-feature-tutorial.md
@@ -321,7 +321,9 @@ field and send an event. For example:
 
     # zerver/lib/actions.py
 
-    def do_set_realm_authentication_methods(realm: Realm, authentication_methods: Dict[str, bool]) -> None:
+    def do_set_realm_authentication_methods(
+        realm: Realm, authentication_methods: Dict[str, bool], *, acting_user: Optional[UserProfile]
+    ) -> None:
         for key, value in list(authentication_methods.items()):
             index = getattr(realm.authentication_methods, key).number
             realm.authentication_methods.set_bit(index, int(value))
diff --git a/zerver/lib/actions.py b/zerver/lib/actions.py
index c74a7dbf90..0e8b6b0cc1 100644
--- a/zerver/lib/actions.py
+++ b/zerver/lib/actions.py
@@ -824,7 +824,7 @@ def do_set_realm_property(
 
 
 def do_set_realm_authentication_methods(
-    realm: Realm, authentication_methods: Dict[str, bool], acting_user: Optional[UserProfile] = None
+    realm: Realm, authentication_methods: Dict[str, bool], *, acting_user: Optional[UserProfile]
 ) -> None:
     old_value = realm.authentication_methods_dict()
     for key, value in list(authentication_methods.items()):
diff --git a/zerver/tests/test_events.py b/zerver/tests/test_events.py
index 3737753267..a47b1b07e6 100644
--- a/zerver/tests/test_events.py
+++ b/zerver/tests/test_events.py
@@ -1068,7 +1068,7 @@ class NormalActionsTest(BaseAction):
             with fake_backends():
                 events = self.verify_action(
                     lambda: do_set_realm_authentication_methods(
-                        self.user_profile.realm, auth_method_dict
+                        self.user_profile.realm, auth_method_dict, acting_user=None
                     )
                 )