diff --git a/Gemfile b/Gemfile
index 61fba86..f2b539f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source :rubygems
+source 'https://rubygems.org/'
 
 gem "savon" ,"~>0.8.1"
 gem "httpi" ,"~>0.7.6"