diff --git a/stdlib/typing.pyi b/stdlib/typing.pyi
index 8f0d4fbb6a02..741e7b8a3167 100644
--- a/stdlib/typing.pyi
+++ b/stdlib/typing.pyi
@@ -757,7 +757,7 @@ class MutableMapping(Mapping[_KT, _VT]):
 
 Text = str
 
-TYPE_CHECKING: bool
+TYPE_CHECKING: Final[bool]
 
 # In stubs, the arguments of the IO class are marked as positional-only.
 # This differs from runtime, but better reflects the fact that in reality