diff --git a/openfga_sdk/client/client.py b/openfga_sdk/client/client.py
index b48a3ec..4766f60 100644
--- a/openfga_sdk/client/client.py
+++ b/openfga_sdk/client/client.py
@@ -107,8 +107,8 @@ def set_heading_if_not_set(
 
 
 def options_to_kwargs(
-    options: dict[str, int | str | dict[str, int | str]] | None = None,
-) -> dict[str, int | str | dict[str, int | str]]:
+    options: dict[str, int | str | bool | dict[str, int | str]] | None = None,
+) -> dict[str, int | str | bool | dict[str, int | str]]:
     """
     Return kwargs with continuation_token and page_size
     """
@@ -124,6 +124,8 @@ def options_to_kwargs(
             kwargs["_headers"] = options["headers"]
         if options.get("retry_params"):
             kwargs["_retry_params"] = options["retry_params"]
+        if options.get("async_req") is not None:
+            kwargs["async_req"] = options["async_req"]
     return kwargs
 
 
diff --git a/openfga_sdk/sync/client/client.py b/openfga_sdk/sync/client/client.py
index c736dae..efd723d 100644
--- a/openfga_sdk/sync/client/client.py
+++ b/openfga_sdk/sync/client/client.py
@@ -107,8 +107,8 @@ def set_heading_if_not_set(
 
 
 def options_to_kwargs(
-    options: dict[str, int | str | dict[str, int | str]] | None = None,
-) -> dict[str, int | str | dict[str, int | str]]:
+    options: dict[str, int | str | bool | dict[str, int | str]] | None = None,
+) -> dict[str, int | str | bool | dict[str, int | str]]:
     """
     Return kwargs with continuation_token and page_size
     """
@@ -124,6 +124,8 @@ def options_to_kwargs(
             kwargs["_headers"] = options["headers"]
         if options.get("retry_params"):
             kwargs["_retry_params"] = options["retry_params"]
+        if options.get("async_req") is not None:
+            kwargs["async_req"] = options["async_req"]
     return kwargs
 
 
diff --git a/test/client/client_test.py b/test/client/client_test.py
index 9850b5d..3d9ea85 100644
--- a/test/client/client_test.py
+++ b/test/client/client_test.py
@@ -246,6 +246,33 @@ async def test_list_stores_with_name(self, mock_request):
                 _request_timeout=ANY,
             )
 
+    @patch.object(rest.RESTClientObject, "request")
+    async def test_list_stores_with_async_req(self, mock_request):
+        """Test that async_req option is correctly propagated to the API call"""
+        response_body = json.dumps(
+            {
+                "stores": [],
+                "continuation_token": "",
+            }
+        )
+
+        mock_request.return_value = mock_response(response_body, 200)
+        configuration = self.configuration
+
+        async with OpenFgaClient(configuration) as api_client:
+            with patch.object(
+                api_client._api, "list_stores", wraps=api_client._api.list_stores
+            ) as mock_api_list_stores:
+                await api_client.list_stores(
+                    options={
+                        "async_req": True,
+                    }
+                )
+
+                mock_api_list_stores.assert_called_once_with(
+                    async_req=True,
+                )
+
     @patch.object(rest.RESTClientObject, "request")
     async def test_create_store(self, mock_request):
         """Test case for create_store
diff --git a/test/sync/client/client_test.py b/test/sync/client/client_test.py
index ec2686a..b1df025 100644
--- a/test/sync/client/client_test.py
+++ b/test/sync/client/client_test.py
@@ -246,6 +246,33 @@ def test_list_stores_with_name(self, mock_request):
                 _request_timeout=ANY,
             )
 
+    @patch.object(rest.RESTClientObject, "request")
+    def test_list_stores_with_async_req(self, mock_request):
+        """Test that async_req option is correctly propagated to the API call"""
+        response_body = json.dumps(
+            {
+                "stores": [],
+                "continuation_token": "",
+            }
+        )
+
+        mock_request.return_value = mock_response(response_body, 200)
+        configuration = self.configuration
+
+        with OpenFgaClient(configuration) as api_client:
+            with patch.object(
+                api_client._api, "list_stores", wraps=api_client._api.list_stores
+            ) as mock_api_list_stores:
+                api_client.list_stores(
+                    options={
+                        "async_req": True,
+                    }
+                )
+
+                mock_api_list_stores.assert_called_once_with(
+                    async_req=True,
+                )
+
     @patch.object(rest.RESTClientObject, "request")
     def test_create_store(self, mock_request):
         """Test case for create_store