diff --git a/stubs/pyOpenSSL/OpenSSL/SSL.pyi b/stubs/pyOpenSSL/OpenSSL/SSL.pyi
index 792795eaf..8857e80a4 100644
--- a/stubs/pyOpenSSL/OpenSSL/SSL.pyi
+++ b/stubs/pyOpenSSL/OpenSSL/SSL.pyi
@@ -1,6 +1,6 @@
 import socket
 from collections.abc import Callable, Sequence
-from typing import Any
+from typing import Any, TypeVar
 
 from OpenSSL.crypto import X509, PKey
 
@@ -135,6 +135,8 @@ class Connection:
     def get_app_data(self) -> Any: ...
     def set_app_data(self, data: Any) -> None: ...
 
+_T = TypeVar("_T")
+
 class Context:
     def __getattr__(self, name: str) -> Any: ...  # incomplete
     def __init__(self, method: int) -> None: ...
@@ -153,9 +155,7 @@ class Context:
     def set_keylog_callback(self, callback: Callable[[Connection, bytes], object]) -> None: ...
     def set_alpn_protos(self, protos: Sequence[bytes]) -> None: ...
     def set_alpn_select_callback(self, callback: Callable[[Connection, list[bytes]], bytes]) -> None: ...
-    def set_ocsp_server_callback(
-        self, callback: Callable[[Connection, bytes | None], bytes], data: bytes | None = ...
-    ) -> None: ...
+    def set_ocsp_server_callback(self, callback: Callable[[Connection, _T | None], bytes], data: _T | None = ...) -> None: ...
     def set_ocsp_client_callback(
-        self, callback: Callable[[Connection, bytes, bytes | None], bool], data: bytes | None = ...
+        self, callback: Callable[[Connection, bytes, _T | None], bool], data: _T | None = ...
     ) -> None: ...