diff --git a/requirements-dev.txt b/requirements-dev.txt
index 887d1f6..23b39d7 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-arrow==0.12.1
+arrow==0.15.1
 aws-sam-cli==0.3.0
 aws-sam-translator==1.5.4
 backports.functools-lru-cache==1.5
diff --git a/requirements.txt b/requirements.txt
index 9b59290..402ed16 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-arrow==0.12.1
+arrow==0.15.1
 backports.functools-lru-cache==1.5
 python-dateutil==2.7.3
 requests==2.18.4