diff --git a/github/Repository.pyi b/github/Repository.pyi
index db1d05570f..05c9dd68e2 100644
--- a/github/Repository.pyi
+++ b/github/Repository.pyi
@@ -336,9 +336,11 @@ class Repository(CompletableGithubObject):
     def get_collaborator_permission(
         self, collaborator: Union[str, NamedUser]
     ) -> str: ...
-    def get_codescan_alerts(self) -> PaginatedList[CodeScanAlert]: ...
+    def get_codescan_alerts(
+        self, ref: Union[str, _NotSetType] = ...
+    ) -> PaginatedList[CodeScanAlert]: ...
     def get_code_scanning_analyses(
-        self, ref: Union[str, _NotSetType]
+        self, ref: Union[str, _NotSetType] = ...
     ) -> PaginatedList[CodeScanningAnalysis]: ...
     def get_collaborators(
         self, affiliation: Union[str, _NotSetType] = ...
diff --git a/github/SecurityAndAnalysis.pyi b/github/SecurityAndAnalysis.pyi
index b5981f1a1b..4061093006 100644
--- a/github/SecurityAndAnalysis.pyi
+++ b/github/SecurityAndAnalysis.pyi
@@ -1,7 +1,9 @@
 from typing import Any, Dict
 
-from github import AdvancedSecurity, SecretScanning, SecretScanningPushProtection
+from github.AdvancedSecurity import AdvancedSecurity
 from github.GithubObject import NonCompletableGithubObject
+from github.SecretScanning import SecretScanning
+from github.SecretScanningPushProtection import SecretScanningPushProtection
 
 class SecurityAndAnalysis(NonCompletableGithubObject):
     def __repr__(self) -> str: ...