diff --git a/src/dataclass_rest/parse_func.py b/src/dataclass_rest/parse_func.py
index 43a99ee..b5eadcd 100644
--- a/src/dataclass_rest/parse_func.py
+++ b/src/dataclass_rest/parse_func.py
@@ -10,6 +10,7 @@
     TypeAlias,
     TypedDict,
     Union,
+    get_type_hints,
 )
 
 from .http_request import File
@@ -25,9 +26,9 @@ def get_url_params_from_string(url_template: str) -> List[str]:
 
 
 def create_query_params_type(
-    spec: FullArgSpec,
-    func: Callable,
-    skipped: Sequence[str],
+        spec: FullArgSpec,
+        func: Callable,
+        skipped: Sequence[str],
 ) -> Type:
     fields = {}
     self_processed = False
@@ -37,48 +38,50 @@ def create_query_params_type(
             continue
         if x in skipped:
             continue
-        fields[x] = spec.annotations.get(x, Any)
+        fields[x] = get_type_hints(func).get(x, Any)
     return TypedDict(f"{func.__name__}_Params", fields)
 
 
 def create_body_type(
-    spec: FullArgSpec,
-    body_param_name: str,
+        spec: FullArgSpec,
+        func: Callable,
+        body_param_name: str,
 ) -> Type:
-    return spec.annotations.get(body_param_name, Any)
+    return get_type_hints(func).get(body_param_name, Any)
 
 
 def create_response_type(
-    spec: FullArgSpec,
+        func: Callable,
 ) -> Type:
-    return spec.annotations.get("return", Any)
+    return get_type_hints(func).get("return", Any)
 
 
-def get_file_params(spec):
+def get_file_params(func: Callable) -> List[str]:
+    type_hints = get_type_hints(func)
     return [
         field
-        for field, field_type in spec.annotations.items()
+        for field, field_type in type_hints.items()
         if isclass(field_type) and issubclass(field_type, File)
     ]
 
 
 def get_url_params_from_callable(
-    url_template: Callable[..., str],
+        url_template: Callable[..., str],
 ) -> List[str]:
     url_template_func_arg_spec = getfullargspec(url_template)
     return url_template_func_arg_spec.args
 
 
 def parse_func(
-    func: Callable,
-    method: str,
-    url_template: UrlTemplate,
-    additional_params: Dict[str, Any],
-    is_json_request: bool,  # noqa: FBT001
-    body_param_name: str,
+        func: Callable,
+        method: str,
+        url_template: UrlTemplate,
+        additional_params: Dict[str, Any],
+        is_json_request: bool,  # noqa: FBT001
+        body_param_name: str,
 ) -> MethodSpec:
     spec = getfullargspec(func)
-    file_params = get_file_params(spec)
+    file_params = get_file_params(func)
 
     is_string_url_template = isinstance(url_template, str)
     url_template_callable = (
@@ -99,8 +102,8 @@ def parse_func(
         url_template=url_template_callable,
         url_params=url_params,
         query_params_type=create_query_params_type(spec, func, skipped_params),
-        body_type=create_body_type(spec, body_param_name),
-        response_type=create_response_type(spec),
+        body_type=create_body_type(spec, func, body_param_name),
+        response_type=create_response_type(func),
         body_param_name=body_param_name,
         additional_params=additional_params,
         is_json_request=is_json_request,
diff --git a/tests/requests/test_parse_func.py b/tests/requests/test_parse_func.py
new file mode 100644
index 0000000..ae16373
--- /dev/null
+++ b/tests/requests/test_parse_func.py
@@ -0,0 +1,36 @@
+from dataclasses import dataclass
+from typing import List, Optional
+
+import requests
+import requests_mock
+
+from dataclass_rest import get, post
+from dataclass_rest.http.requests import RequestsClient
+
+
+@dataclass
+class TestBody:
+    value: int
+
+
+def test_string_hints(session: requests.Session, mocker: requests_mock.Mocker):
+    class Api(RequestsClient):
+        @get("/items/{item_id}")
+        def get_item(self, item_id: "str") -> "List[int]":
+            raise NotImplementedError
+
+        @post("/items")
+        def create_item(self, body: "TestBody") -> "Optional[int]":
+            raise NotImplementedError
+
+    mocker.get(
+        "http://example.com/items/1",
+        text="[1, 2, 3]",
+        complete_qs=True,
+    )
+    mocker.post("http://example.com/items", text="1", complete_qs=True)
+
+    client = Api(base_url="http://example.com", session=session)
+
+    assert client.get_item("1") == [1, 2, 3]
+    assert client.create_item(TestBody(value=5)) == 1