diff --git a/qwarc/aiohttp.py b/qwarc/aiohttp.py
index a1e407f..931a7f0 100644
--- a/qwarc/aiohttp.py
+++ b/qwarc/aiohttp.py
@@ -175,6 +175,11 @@ class ClientResponse(aiohttp.client_reqrep.ClientResponse):
 			self._content = await self._read()
 		return self._content
 
+	async def json(self, **kwargs):
+		if 'content_type' not in kwargs:
+			kwargs['content_type'] = None
+		return (await super().json(**kwargs))
+
 	async def release(self):
 		if not self.closed:
 			self.connection.reset_raw_data()