diff --git a/setup.py b/setup.py
index ff846c2e3..86186a3ae 100644
--- a/setup.py
+++ b/setup.py
@@ -134,7 +134,7 @@ def run(self):
                         ### Tests fail without version pin (GHA run: https://github.com/udosson/indy-plenum/actions/runs/1078741118)
                         'sortedcontainers==1.5.7',
                         ### Tests fail without version pin (GHA run: https://github.com/udosson/indy-plenum/actions/runs/1078741118)
-                        'ujson==1.33',
+                        'ujson==5.4.0',
                         ],
 
     setup_requires=['pytest-runner==5.3.0'],