diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 94fd643..c84752b
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 pymongo==3.5.1
 tweepy==3.5.0
-ujson==1.35
+ujson==5.2.0
 nltk==3.4
 pandas