diff --git a/polyapi/poly_tables.py b/polyapi/poly_tables.py
index cad62c9..99cebb6 100644
--- a/polyapi/poly_tables.py
+++ b/polyapi/poly_tables.py
@@ -298,19 +298,19 @@ def _get_column_type_str(name: str, schema: Dict[str, Any], is_required: bool) -
     col_type = schema.get("type", "object")
     if isinstance(col_type, list):
         subtypes = [_get_column_type_str(name, { **schema, "type": t }, is_required) for t in col_type]
-        result = f"Union[{", ".join(subtypes)}]"
+        result = f"Union[{', '.join(subtypes)}]"
     elif col_type == "array":
         if isinstance(schema["items"], list):
             subtypes = [_get_column_type_str(f"{name}{i}", s, True) for i, s in enumerate(schema["items"])]
-            result = f"Tuple[{", ".join(subtypes)}]"
+            result = f"Tuple[{', '.join(subtypes)}]"
         elif isinstance(schema["items"], dict):
-            result = f"List[{_get_column_type_str(name, schema["items"], True)}]"
+            result = f"List[{_get_column_type_str(name, schema['items'], True)}]"
         else:
             result = "List[Any]"
     elif col_type == "object":
         if isinstance(schema.get("patternProperties"), dict):
             # TODO: Handle multiple pattern properties
-            result = f"Dict[str, {_get_column_type_str(f"{name}_", schema["patternProperties"], True)}]"
+            result = f"Dict[str, {_get_column_type_str(f'{name}_', schema["patternProperties"], True)}]"
         elif isinstance(schema.get("properties"), dict) and len(schema["properties"].values()) > 0:
             # TODO: Handle x-poly-refs
             result = f'"{name}"'
diff --git a/pyproject.toml b/pyproject.toml
index 6f274ff..a956bfb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ requires = ["setuptools>=61.2", "wheel"]
 
 [project]
 name = "polyapi-python"
-version = "0.3.9.dev10"
+version = "0.3.9.dev11"
 description = "The Python Client for PolyAPI, the IPaaS by Developers for Developers"
 authors = [{ name = "Dan Fellin", email = "dan@polyapi.io" }]
 dependencies = [