diff --git a/_plugins/contributors.rb b/_plugins/contributors.rb
index e4c24c20..d9c15013 100644
--- a/_plugins/contributors.rb
+++ b/_plugins/contributors.rb
@@ -48,7 +48,7 @@ module Jekyll
 				end
 			end
 
-			site.primary_devs = JSON.parse(open("https://api.github.com/repos/bitcoin/bitcoin/collaborators").read)
+			site.primary_devs = JSON.parse(open("https://api.github.com/repos/bitcoin/bitcoin/collaborators","User-Agent"=>"Ruby/#{RUBY_VERSION}").read)
 			site.contributors = merge_contributors(fetch_contributors(), site.config['aliases']).sort_by{|c| - c['contributions']}
 		end