diff --git a/src/_pytest/fixtures.py b/src/_pytest/fixtures.py
index 269369642..6a57fffd1 100644
--- a/src/_pytest/fixtures.py
+++ b/src/_pytest/fixtures.py
@@ -758,7 +758,7 @@ class SubRequest(FixtureRequest):
         self,
         request: "FixtureRequest",
         scope: "_Scope",
-        param,
+        param: Any,
         param_index: int,
         fixturedef: "FixtureDef[object]",
         *,