diff --git a/apps/common/validators.py b/apps/common/validators.py
index 9a4c1e501..b273bd1de 100644
--- a/apps/common/validators.py
+++ b/apps/common/validators.py
@@ -4,4 +4,4 @@ from django.core.validators import RegexValidator
 from django.utils.translation import ugettext_lazy as _
 
 
-alphanumeric = RegexValidator(r'^[0-9a-zA-Z_-]*$', _('Special char not allowed'))
\ No newline at end of file
+alphanumeric = RegexValidator(r'^[0-9a-zA-Z_@\-\.]*$', _('Special char not allowed'))
\ No newline at end of file