diff --git a/crowd-tracker-backend/requirements.txt b/crowd-tracker-backend/requirements.txt
index 14768c8..0885362 100644
--- a/crowd-tracker-backend/requirements.txt
+++ b/crowd-tracker-backend/requirements.txt
@@ -11,5 +11,5 @@ python-dotenv==0.8.2
 pytz==2018.4
 requests==2.18.4
 six==1.11.0
-ujson==1.35
+ujson==5.2.0
 urllib3==1.22
\ No newline at end of file