diff --git a/examples/flask/requirements.txt b/examples/flask/requirements.txt
index 4385a34..dd6413e 100644
--- a/examples/flask/requirements.txt
+++ b/examples/flask/requirements.txt
@@ -1,4 +1,4 @@
-arrow==0.12.1
+arrow==0.15.1
 astroid==2.0.1
 atomicwrites==1.1.5
 attrs==18.1.0