diff --git a/crates/ty_python_semantic/resources/mdtest/typed_dict.md b/crates/ty_python_semantic/resources/mdtest/typed_dict.md
index ff0b5dce9af593..667e0be53c1acf 100644
--- a/crates/ty_python_semantic/resources/mdtest/typed_dict.md
+++ b/crates/ty_python_semantic/resources/mdtest/typed_dict.md
@@ -2596,6 +2596,9 @@ Bad10 = TypedDict("Bad10", {name: 42})
 
 # error: [invalid-argument-type] "Expected a string-literal key in the `fields` dict of `TypedDict()`"
 class Bad11(TypedDict("Bad11", {name: 42})): ...
+
+# error: [invalid-argument-type] "Invalid argument to parameter `typename` of `TypedDict()`: Expected `str`, found `Literal[123]`"
+class Bad12(TypedDict(123, {"field": int})): ...
 ```
 
 ## Functional `TypedDict` with unknown fields