diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 99ea5de..827500c
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 alembic==0.9.6
 amqp==2.2.2
 anyjson==0.3.3
-arrow==0.12.0
+arrow==0.15.1
 billiard==3.5.0.3
 blinker==1.4
 celery==4.1.0