diff --git a/lemur/common/validators.py b/lemur/common/validators.py
index de60b5af..61486dff 100644
--- a/lemur/common/validators.py
+++ b/lemur/common/validators.py
@@ -1,5 +1,5 @@
 
-import arrow
+import arrow, re
 from flask import current_app
 from marshmallow.exceptions import ValidationError