diff --git a/deps/obs-scripting/obs-scripting-python-import.c b/deps/obs-scripting/obs-scripting-python-import.c
index da6bf25a8..be6342b2c 100644
--- a/deps/obs-scripting/obs-scripting-python-import.c
+++ b/deps/obs-scripting/obs-scripting-python-import.c
@@ -118,6 +118,7 @@ bool import_python(const char *python_path, python_version_t *python_version)
 
 	IMPORT_FUNC(PyType_Ready);
 	IMPORT_FUNC(PyType_Modified);
+	IMPORT_FUNC(PyType_IsSubtype);
 	IMPORT_FUNC(PyObject_GenericGetAttr);
 	IMPORT_FUNC(PyObject_IsTrue);
 	IMPORT_FUNC(Py_DecRef);