diff --git a/requirements.txt b/requirements.txt
index ea75313..fda921a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ social-auth-core==2.0.0
 thinc==6.12.0
 toolz==0.9.0
 tqdm==4.28.1
-ujson==1.35
+ujson==5.4.0
 urllib3==1.24.1
 whitenoise==4.1.2
 dj-database-url