diff --git a/src/click/core.py b/src/click/core.py
index a6336ecf8..4875fb79d 100644
--- a/src/click/core.py
+++ b/src/click/core.py
@@ -2696,8 +2696,8 @@ def _write_opts(opts: cabc.Sequence[str]) -> str:
 
         return ("; " if any_prefix_is_slash else " / ").join(rv), help
 
-    def get_help_extra(self, ctx: Context) -> t.Dict[str, t.Any]:
-        extra: t.Dict[str, t.Any] = {}
+    def get_help_extra(self, ctx: Context) -> dict[str, t.Any]:
+        extra: dict[str, t.Any] = {}
 
         if self.show_envvar:
             envvar = self.envvar