diff --git a/src/openapi_python_generator/language_converters/python/service_generator.py b/src/openapi_python_generator/language_converters/python/service_generator.py
index f0dfe50..eb28e0a 100644
--- a/src/openapi_python_generator/language_converters/python/service_generator.py
+++ b/src/openapi_python_generator/language_converters/python/service_generator.py
@@ -36,7 +36,7 @@ def generate_body_param(operation: Operation) -> Union[str, None]:
         return None
     else:
         if isinstance(operation.requestBody, Reference):
-            return "data.dict()"
+            return "data.model_dump()"
 
         if operation.requestBody.content is None:
             return None  # pragma: no cover
@@ -50,7 +50,7 @@ def generate_body_param(operation: Operation) -> Union[str, None]:
             return None  # pragma: no cover
 
         if isinstance(media_type.media_type_schema, Reference):
-            return "data.dict()"
+            return "data.model_dump()"
         elif isinstance(media_type.media_type_schema, Schema):
             schema = media_type.media_type_schema
             if schema.type == "array":
diff --git a/src/openapi_python_generator/language_converters/python/templates/enum.jinja2 b/src/openapi_python_generator/language_converters/python/templates/enum.jinja2
index f88bdd6..bde758e 100644
--- a/src/openapi_python_generator/language_converters/python/templates/enum.jinja2
+++ b/src/openapi_python_generator/language_converters/python/templates/enum.jinja2
@@ -4,6 +4,6 @@ class {{ name }}(str, Enum):
     {% for enumItem in enum %}
 
     {% if enumItem is string %}
-    {{ enumItem.upper() }} = '{{ enumItem }}'{% else %}
+    {{ enumItem.upper().replace('-', '_') }} = '{{ enumItem }}'{% else %}
     value_{{ enumItem }} = {{ enumItem }}{% endif %}
     {% endfor %}
diff --git a/src/openapi_python_generator/language_converters/python/templates/requests.jinja2 b/src/openapi_python_generator/language_converters/python/templates/requests.jinja2
index 3aaa5de..63781cb 100644
--- a/src/openapi_python_generator/language_converters/python/templates/requests.jinja2
+++ b/src/openapi_python_generator/language_converters/python/templates/requests.jinja2
@@ -17,7 +17,7 @@ def {{ operation_id }}({{ params }} api_config_override : Optional[APIConfig] =
 
     query_params = {key:value for (key,value) in query_params.items() if value is not None}
 
-    response = requests.request(
+    response = request(
         '{{ method }}',
         f'{base_path}{path}',
         headers=headers,
diff --git a/src/openapi_python_generator/language_converters/python/templates/service.jinja2 b/src/openapi_python_generator/language_converters/python/templates/service.jinja2
index dab7263..6ee2eda 100644
--- a/src/openapi_python_generator/language_converters/python/templates/service.jinja2
+++ b/src/openapi_python_generator/language_converters/python/templates/service.jinja2
@@ -1,11 +1,11 @@
 from typing import *
-import {{ library_import }}
 import json
 {% if use_orjson %}
 import orjson
 {% endif %}
 
 from ..models import *
+from ..requests import request
 from ..api_config import APIConfig, HTTPException
 
 {{ content | safe}}