diff --git a/.chronus/changes/typespec-internal-model-imports-2025-6-25-1-29-21.md b/.chronus/changes/typespec-internal-model-imports-2025-6-25-1-29-21.md
new file mode 100644
index 00000000000..062027577cd
--- /dev/null
+++ b/.chronus/changes/typespec-internal-model-imports-2025-6-25-1-29-21.md
@@ -0,0 +1,8 @@
+---
+# Change versionKind to one of: internal, fix, dependencies, feature, deprecation, breaking
+changeKind: fix
+packages:
+  - "@typespec/http-client-python"
+---
+
+Ensure necessary typing imports for internal models
diff --git a/packages/http-client-python/generator/pygen/codegen/serializers/model_serializer.py b/packages/http-client-python/generator/pygen/codegen/serializers/model_serializer.py
index 4f2fd9c196e..350b0b4c68c 100644
--- a/packages/http-client-python/generator/pygen/codegen/serializers/model_serializer.py
+++ b/packages/http-client-python/generator/pygen/codegen/serializers/model_serializer.py
@@ -266,7 +266,7 @@ def imports(self) -> FileImport:
                     )
             if model.is_polymorphic:
                 file_import.add_submodule_import("typing", "Dict", ImportType.STDLIB)
-            if not model.internal and self.init_line(model):
+            if self.need_init(model):
                 file_import.add_submodule_import("typing", "overload", ImportType.STDLIB)
                 file_import.add_submodule_import("typing", "Mapping", ImportType.STDLIB)
                 file_import.add_submodule_import("typing", "Any", ImportType.STDLIB)