diff --git a/pyproject.toml b/pyproject.toml
index fdf0369..b0c5677 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "yandexapimanager"
-version = "0.1.4-3"
+version = "0.1.4-4"
 description = ""
 authors = [
     {name = "Evgeny (Krymmy) Momotov",email = "evgeny.momotov@gmail.com"}
diff --git a/src/YandexApiManager/api_manager.py b/src/YandexApiManager/api_manager.py
index 953e81d..96bb05f 100644
--- a/src/YandexApiManager/api_manager.py
+++ b/src/YandexApiManager/api_manager.py
@@ -49,7 +49,7 @@ class YandexManagerClient:
         return access_response
 
     async def create_call(self, data: CallIn) -> Call | None:
-        response = await self._request('POST', '/calls/', data=data.model_dump())
+        response = await self._request('POST', '/calls/', json=data.model_dump())
         if not response:
             return None
         return Call(**response)