diff --git a/aleph_alpha_client/aleph_alpha_client.py b/aleph_alpha_client/aleph_alpha_client.py
index 753afff..106d00a 100644
--- a/aleph_alpha_client/aleph_alpha_client.py
+++ b/aleph_alpha_client/aleph_alpha_client.py
@@ -943,7 +943,7 @@ def _build_json_body(
             json_body["hosting"] = self.hosting
         return json_body
 
-    def models(self) -> Mapping[str, Any]:
+    def models(self) -> List[Mapping[str, Any]]:
         """
         Queries all models which are currently available.
 
@@ -1357,7 +1357,9 @@ async def _get_request_text(self, endpoint: str) -> str:
                 _raise_for_status(response.status, await response.text())
             return await response.text()
 
-    async def _get_request_json(self, endpoint: str) -> Mapping[str, Any]:
+    async def _get_request_json(
+        self, endpoint: str
+    ) -> Union[List[Mapping[str, Any]], Mapping[str, Any]]:
         async with self.session.get(
             self.host + endpoint,
         ) as response:
@@ -1401,13 +1403,13 @@ def _build_json_body(
             json_body["hosting"] = self.hosting
         return json_body
 
-    async def models(self) -> Mapping[str, Any]:
+    async def models(self) -> List[Mapping[str, Any]]:
         """
         Queries all models which are currently available.
 
         For documentation of the response, see https://docs.aleph-alpha.com/api/available-models/
         """
-        return await self._get_request_json("models_available")
+        return await self._get_request_json("models_available")  # type: ignore
 
     async def complete(
         self,
diff --git a/tests/test_clients.py b/tests/test_clients.py
index b613731..3327510 100644
--- a/tests/test_clients.py
+++ b/tests/test_clients.py
@@ -66,7 +66,7 @@ async def test_nice_flag_on_async_client(httpserver: HTTPServer):
 @pytest.mark.system_test
 def test_available_models_sync_client(sync_client: Client, model_name: str):
     models = sync_client.models()
-    assert model_name in [model["name"] for model in models]
+    assert model_name in {model["name"] for model in models}
 
 
 @pytest.mark.system_test