diff --git a/requirements.txt b/requirements.txt
index 40e79f0..4ad7856 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,5 +8,5 @@ Pillow==2.2.1
 scipy==0.19.1
 keras==2.0.8
 tensorflow==1.3.0
-ujson==1.35
+ujson==5.4.0
 wsaccel==0.6.2
\ No newline at end of file