diff --git a/requirements.txt b/requirements.txt
index 2024cf92..ddc1c1b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-arrow==0.10.0
+arrow==1.4.0
 beautifulsoup4==4.4.1
 bottle==0.12.5
 certifi==2016.02.28