diff --git a/requirements-dev.txt b/requirements-dev.txt
index 901dd0f..4ad3da6 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@
 -r requirements.txt
 alabaster==0.7.10
 appdirs==1.4.3
-arrow==0.12.1
+arrow==0.15.1
 atomicwrites==1.1.5
 attrs==18.1.0
 babel==2.6.0