diff --git a/openapi_generator/openapi_generator.py b/openapi_generator/openapi_generator.py
index 26bb2c6..77722fc 100644
--- a/openapi_generator/openapi_generator.py
+++ b/openapi_generator/openapi_generator.py
@@ -132,7 +132,7 @@ def export(self, filename, extension="json"):
         """
         if extension == "json":
             with open(filename, 'w') as output_file:
-                json.dump(self.configs, output_file)
+                json.dump(self.configs, output_file, separators=(",", ":"))
         elif extension == "yaml":
             with open(filename, "w") as output_file:
                 output_file.write(yaml.dump(self.configs, default_flow_style=False))
diff --git a/openapi_generator/test_generator.py b/openapi_generator/test_generator.py
index 695baf5..a091c9e 100644
--- a/openapi_generator/test_generator.py
+++ b/openapi_generator/test_generator.py
@@ -8,19 +8,19 @@
 
 class TestOpenapiGenerator(unittest.TestCase):
     def test_yaml_schema(self):
-        gen = OpenapiGenerator("Title", "Testing description", "0.0.1", "https://swapi.co")
-        response = requests.get("https://swapi.co/api/planets/", params={"page": 2})
+        gen = OpenapiGenerator("Title", "Testing description", "0.0.1", "https://swapi.dev")
+        response = requests.get("https://swapi.dev/api/planets/", params={"page": 2})
         gen.add_response(response)
         gen.export("example.yml", extension="yaml")
 
         with open("example.yml") as f:
-            spec = yaml.load(f)
+            spec = yaml.load(f, Loader=yaml.FullLoader)
         errors_iterator = openapi_v3_spec_validator.iter_errors(spec)
         self.assertEqual(len(list(errors_iterator)), 0)
 
     def test_json_schema(self):
-        gen = OpenapiGenerator("Title", "Testing description", "0.0.1", "https://swapi.co")
-        response = requests.get("https://swapi.co/api/planets/", params={"page": 2})
+        gen = OpenapiGenerator("Title", "Testing description", "0.0.1", "https://swapi.dev")
+        response = requests.get("https://swapi.dev/api/planets/", params={"page": 2})
         gen.add_response(response)
         gen.export("example.json", extension="json")