diff --git a/applications/ColossalChat/coati/distributed/zero_bubble/distributor.py b/applications/ColossalChat/coati/distributed/zero_bubble/distributor.py
index 8a710ec07..262537f88 100644
--- a/applications/ColossalChat/coati/distributed/zero_bubble/distributor.py
+++ b/applications/ColossalChat/coati/distributed/zero_bubble/distributor.py
@@ -65,7 +65,10 @@ class Distributor:
                         self.profiler.exit(f"sync_model_consumer_pp_{i}")
                         self.weight_version[i] += 1
                 if all(
-                    [signal.get(f"producer_{self.distributor_id}_pp_{i}", None) == "ready_sync_model" for i in range(self.consumer_pp_size)]
+                    [
+                        signal.get(f"producer_{self.distributor_id}_pp_{i}", None) == "ready_sync_model"
+                        for i in range(self.consumer_pp_size)
+                    ]
                 ):
                     for i in range(self.consumer_pp_size):
                         self.profiler.enter(f"sync_model_producer_{self.distributor_id}_pp_{i}")
diff --git a/applications/ColossalChat/coati/distributed/zero_bubble/requirements.txt b/applications/ColossalChat/coati/distributed/zero_bubble/requirements.txt
index 8c4fb8eed..cae149a8c 100644
--- a/applications/ColossalChat/coati/distributed/zero_bubble/requirements.txt
+++ b/applications/ColossalChat/coati/distributed/zero_bubble/requirements.txt
@@ -1,2 +1,2 @@
 ray==2.49.2
-pygloo>=0.2.0  # you need to build from source: https://github.com/ray-project/pygloo  commit 82ae2d72222aefcac54a8e88995735ede3abe9cf   https://github.com/ray-project/pygloo/blob/main/README.md
\ No newline at end of file
+pygloo>=0.2.0  # you need to build from source: https://github.com/ray-project/pygloo  commit 82ae2d72222aefcac54a8e88995735ede3abe9cf   https://github.com/ray-project/pygloo/blob/main/README.md