diff --git a/tools/serve/test_serve.py b/tools/serve/test_serve.py
index 878b0c723b6f732..4d7fb0a7864a9cf 100644
--- a/tools/serve/test_serve.py
+++ b/tools/serve/test_serve.py
@@ -1,4 +1,3 @@
-import json
 import os
 import pickle
 import platform