diff --git a/requirements_extras.txt b/requirements_extras.txt
index aaa66fe..dfc71a8 100644
--- a/requirements_extras.txt
+++ b/requirements_extras.txt
@@ -18,4 +18,4 @@ cassandra-driver==3.7.1
 PyMySQL==0.9.3
 kafka-python==2.0.2
 redis==2.10.5
-ujson==1.35
+ujson==5.2.0
diff --git a/setup.py b/setup.py
index cbee86e..dc5c39c 100644
--- a/setup.py
+++ b/setup.py
@@ -89,7 +89,7 @@
     # https://packaging.python.org/en/latest/requirements.html
     install_requires=requirements,
     extras_require={
-        'redis': ['redis>=2.10,<3', 'ujson>=1.33,<2'],
-        'test': ['cassandra-driver>=3.7,<3.8', 'PyMySQL>=0.7,<0.10', 'kafka-python>=2.0.2,<2.1', 'redis>=2.10,<3', 'ujson>=1.33,<2'],
+        'redis': ['redis>=2.10,<3', 'ujson>=1.33,<6'],
+        'test': ['cassandra-driver>=3.7,<3.8', 'PyMySQL>=0.7,<0.10', 'kafka-python>=2.0.2,<2.1', 'redis>=2.10,<3', 'ujson>=1.33,<6'],
     },
 )