diff --git a/setup.py b/setup.py
index c25a7e3..92feed7 100644
--- a/setup.py
+++ b/setup.py
@@ -60,7 +60,7 @@ def read_version():
         'colorlog==2.10.0',
         'click==6.7',
         'requests==2.9.1',
-        'ujson==1.35',
+        'ujson==5.4.0',
         'aioethereum==0.1.0',
     ],
     entry_points='''