diff --git a/lib/gitlab/backend/gitolite_config.rb b/lib/gitlab/backend/gitolite_config.rb
index fcf43fa..d988164 100644
--- a/lib/gitlab/backend/gitolite_config.rb
+++ b/lib/gitlab/backend/gitolite_config.rb
@@ -151,6 +151,9 @@ module Gitlab
       repo.add_permission("RW+", "", name_writers) unless name_writers.blank?
       repo.add_permission("RW+", "", name_masters) unless name_masters.blank?
 
+      # Add sharedRepository config
+      repo.set_git_config("core.sharedRepository", "0660")
+
       repo
     end
 
--
libgit2 0.21.2