diff --git a/github/RepositoryKey.py b/github/RepositoryKey.py
index 57e27419..6a02312b 100644
--- a/github/RepositoryKey.py
+++ b/github/RepositoryKey.py
@@ -32,92 +32,70 @@
 # along with PyGithub. If not, see <http://www.gnu.org/licenses/>.             #
 #                                                                              #
 ################################################################################
-
+from datetime import datetime
 from typing import Any, Dict
 
-import github.GithubObject
+from github.GithubObject import Attribute, CompletableGithubObject, NotSet
 
 
-class RepositoryKey(github.GithubObject.CompletableGithubObject):
+class RepositoryKey(CompletableGithubObject):
     """
     This class represents RepositoryKeys. The reference can be found here https://docs.github.com/en/rest/reference/repos#deploy-keys
     """
 
+    def _initAttributes(self) -> None:
+        self._created_at: Attribute[datetime] = NotSet
+        self._id: Attribute[int] = NotSet
+        self._key: Attribute[str] = NotSet
+        self._title: Attribute[str] = NotSet
+        self._url: Attribute[str] = NotSet
+        self._verified: Attribute[bool] = NotSet
+        self._read_only: Attribute[bool] = NotSet
+
     def __repr__(self) -> str:
         return self.get__repr__({"id": self._id.value, "title": self._title.value})
 
     @property
-    def created_at(self):
-        """
-        :type: datetime.datetime
-        """
+    def created_at(self) -> datetime:
         self._completeIfNotSet(self._created_at)
         return self._created_at.value
 
     @property
-    def id(self):
-        """
-        :type: integer
-        """
+    def id(self) -> int:
         self._completeIfNotSet(self._id)
         return self._id.value
 
     @property
-    def key(self):
-        """
-        :type: string
-        """
+    def key(self) -> str:
         self._completeIfNotSet(self._key)
         return self._key.value
 
     @property
-    def title(self):
-        """
-        :type: string
-        """
+    def title(self) -> str:
         self._completeIfNotSet(self._title)
         return self._title.value
 
     @property
-    def url(self):
-        """
-        :type: string
-        """
+    def url(self) -> str:
         self._completeIfNotSet(self._url)
         return self._url.value
 
     @property
-    def verified(self):
-        """
-        :type: bool
-        """
+    def verified(self) -> bool:
         self._completeIfNotSet(self._verified)
         return self._verified.value
 
     @property
-    def read_only(self):
-        """
-        :type: bool
-        """
+    def read_only(self) -> bool:
         self._completeIfNotSet(self._read_only)
         return self._read_only.value
 
-    def delete(self):
+    def delete(self) -> None:
         """
         :calls: `DELETE /repos/{owner}/{repo}/keys/{id} <https://docs.github.com/en/rest/reference/repos#deploy-keys>`_
-        :rtype: None
         """
         headers, data = self._requester.requestJsonAndCheck("DELETE", self.url)
 
-    def _initAttributes(self) -> None:
-        self._created_at = github.GithubObject.NotSet
-        self._id = github.GithubObject.NotSet
-        self._key = github.GithubObject.NotSet
-        self._title = github.GithubObject.NotSet
-        self._url = github.GithubObject.NotSet
-        self._verified = github.GithubObject.NotSet
-        self._read_only = github.GithubObject.NotSet
-
     def _useAttributes(self, attributes: Dict[str, Any]) -> None:
         if "created_at" in attributes:  # pragma no branch
             self._created_at = self._makeDatetimeAttribute(attributes["created_at"])
diff --git a/github/RepositoryKey.pyi b/github/RepositoryKey.pyi
deleted file mode 100644
index 44a942b6..00000000
--- a/github/RepositoryKey.pyi
+++ /dev/null
@@ -1,24 +0,0 @@
-from datetime import datetime
-from typing import Any, Dict
-
-from github.GithubObject import CompletableGithubObject
-
-class RepositoryKey(CompletableGithubObject):
-    def __repr__(self) -> str: ...
-    def _initAttributes(self) -> None: ...
-    def _useAttributes(self, attributes: Dict[str, Any]) -> None: ...
-    @property
-    def created_at(self) -> datetime: ...
-    def delete(self) -> None: ...
-    @property
-    def id(self) -> int: ...
-    @property
-    def key(self) -> str: ...
-    @property
-    def read_only(self) -> bool: ...
-    @property
-    def title(self) -> str: ...
-    @property
-    def url(self) -> str: ...
-    @property
-    def verified(self) -> bool: ...