diff --git a/tests/test_deployment.py b/tests/test_deployment.py
index b8ee42f0..a039567a 100644
--- a/tests/test_deployment.py
+++ b/tests/test_deployment.py
@@ -1,3 +1,5 @@
+import json
+
 import httpx
 import pytest
 import respx
@@ -14,6 +16,7 @@
         201,
         json={
             "id": "p1",
+            "model": "test/model",
             "version": "v1",
             "urls": {
                 "get": "https://api.replicate.com/v1/predictions/p1",
@@ -46,6 +49,7 @@ async def test_deployment_predictions_create(async_flag):
             input={"text": "world"},
             webhook="https://example.com/webhook",
             webhook_events_filter=["completed"],
+            stream=True,
         )
     else:
         deployment = client.deployments.get("test/model")
@@ -54,8 +58,16 @@ async def test_deployment_predictions_create(async_flag):
             input={"text": "world"},
             webhook="https://example.com/webhook",
             webhook_events_filter=["completed"],
+            stream=True,
         )
 
     assert router["deployments.predictions.create"].called
+    request = router["deployments.predictions.create"].calls[0].request
+    request_body = json.loads(request.content)
+    assert request_body["input"] == {"text": "world"}
+    assert request_body["webhook"] == "https://example.com/webhook"
+    assert request_body["webhook_events_filter"] == ["completed"]
+    assert request_body["stream"] is True
+
     assert prediction.id == "p1"
     assert prediction.input == {"text": "world"}