diff --git a/pyzx/graph/jsonparser.py b/pyzx/graph/jsonparser.py
index 78038cd0..68711f18 100644
--- a/pyzx/graph/jsonparser.py
+++ b/pyzx/graph/jsonparser.py
@@ -71,7 +71,7 @@ def _new_var(name: str) -> Poly:
         except Exception as e:
             raise ValueError(e)
 
-def json_to_graph(js: Union[str,dict[str,Any]], backend:Optional[str]=None) -> BaseGraph:
+def json_to_graph(js: Union[str,Dict[str,Any]], backend:Optional[str]=None) -> BaseGraph:
     """Converts the json representation of a .qgraph Quantomatic graph into
     a pyzx graph. If JSON is given as a string, parse it first."""
     if isinstance(js, str):
diff --git a/pyzx/graph/scalar.py b/pyzx/graph/scalar.py
index 7a803961..e54e75d6 100644
--- a/pyzx/graph/scalar.py
+++ b/pyzx/graph/scalar.py
@@ -194,7 +194,7 @@ def to_json(self) -> str:
         return json.dumps(self.to_dict())
 
     @classmethod
-    def from_json(cls, s: Union[str,dict[str,Any]]) -> 'Scalar':
+    def from_json(cls, s: Union[str,Dict[str,Any]]) -> 'Scalar':
         if isinstance(s, str):
             d = json.loads(s)
         else: