diff --git a/.circleci/config.yml b/.circleci/config.yml
index 168e12a56b5..0b369477c28 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -542,6 +542,7 @@ jobs:
                 --cov=litellm \
                 --cov-report=xml \
                 -n 4 \
+                --dist=loadscope \
                 --junitxml=test-results/junit.xml \
                 --durations=5 \
                 -vv"
diff --git a/tests/local_testing/test_router_utils.py b/tests/local_testing/test_router_utils.py
index 55b1893c072..7ade0777093 100644
--- a/tests/local_testing/test_router_utils.py
+++ b/tests/local_testing/test_router_utils.py
@@ -265,7 +265,7 @@ async def test_call_router_callbacks_on_success():
                 )
                 assert increment["increment_value"] == 1
 
-
+@pytest.mark.serial
 @pytest.mark.asyncio
 async def test_call_router_callbacks_on_failure():
     router = Router(