diff --git a/Allura/allura/lib/plugin.py b/Allura/allura/lib/plugin.py
index 89537d8..d9cdf9a 100644
--- a/Allura/allura/lib/plugin.py
+++ b/Allura/allura/lib/plugin.py
@@ -1224,7 +1224,7 @@
            It should be overridden for your specific envirnoment'''
         return None
 
-    def registration_date(self, project):
+    def registration_date(self, project) -> datetime:
         '''
         Return the datetime the project was created.
         '''
diff --git a/Allura/allura/model/project.py b/Allura/allura/model/project.py
index c0a010f..f0d3552 100644
--- a/Allura/allura/model/project.py
+++ b/Allura/allura/model/project.py
@@ -1015,7 +1015,7 @@
         uids = [uid for uid in named_roles.userids_that_reach if uid is not None]
         return list(User.query.find({'_id': {'$in': uids}, 'disabled': False, 'pending': False}))
 
-    def users_with_role(self, *role_names):
+    def users_with_role(self, *role_names) -> list[User]:
         """Return all users in this project that have at least one of the roles
         specified.