diff --git a/files/gitlab-cookbooks/gitlab/attributes/default.rb b/files/gitlab-cookbooks/gitlab/attributes/default.rb
index 1adfebf..747a29f 100644
--- a/files/gitlab-cookbooks/gitlab/attributes/default.rb
+++ b/files/gitlab-cookbooks/gitlab/attributes/default.rb
@@ -144,6 +144,7 @@ default['gitlab']['gitlab-rails']['smtp_domain'] = nil
 default['gitlab']['gitlab-rails']['smtp_authentication'] = nil
 default['gitlab']['gitlab-rails']['smtp_enable_starttls_auto'] = nil
 default['gitlab']['gitlab-rails']['smtp_tls'] = nil
+default['gitlab']['gitlab-rails']['smtp_openssl_verify_mode'] = nil
 
 ####
 # Unicorn
--
libgit2 0.21.2