diff --git a/PyTorchInternals/requirements.txt b/PyTorchInternals/requirements.txt
index cbaf6a9..9bede80 100644
--- a/PyTorchInternals/requirements.txt
+++ b/PyTorchInternals/requirements.txt
@@ -78,7 +78,7 @@ tornado==5.0.1
 tqdm==4.19.8
 traitlets==4.3.2
 typing==3.6.4
-ujson==1.35
+ujson==5.2.0
 urllib3==1.24.2
 wcwidth==0.1.7
 webencodings==0.5.1