diff --git a/requirements.txt b/requirements.txt
index 57fbc60..2348b0b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -224,7 +224,7 @@ tornado==6.0.4
 tqdm @ file:///tmp/build/80754af9/tqdm_1593446365756/work
 traitlets==4.3.3
 typing-extensions @ file:///tmp/build/80754af9/typing_extensions_1592847887441/work
-ujson==1.35
+ujson==5.2.0
 unicodecsv==0.14.1
 urllib3==1.25.9
 virtualenv==20.1.0