diff --git a/ros/wf5/requirements.txt b/ros/wf5/requirements.txt
index 467acc1..43d5236 100644
--- a/ros/wf5/requirements.txt
+++ b/ros/wf5/requirements.txt
@@ -87,7 +87,7 @@ tornado==5.1.1
 tqdm==4.26.0
 twine==1.12.1
 typing-extensions==3.7.2
-ujson==1.35
+ujson==5.4.0
 urllib3==1.23
 uvloop==0.11.2
 webencodings==0.5.1