diff --git a/Gemfile b/Gemfile
index e59f27ff..bad49536 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-source 'https://rubygems.org'
+source 'https://gems.sutty.nl'
 
 git_source(:github) do |repo_name|
   repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?('/')
diff --git a/Gemfile.lock b/Gemfile.lock
index cdb6e9d8..70efd1e1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,7 @@ GIT
       nokogiri
 
 GEM
-  remote: https://rubygems.org/
+  remote: https://:@gems.sutty.nl/
   specs:
     actioncable (6.0.0)
       actionpack (= 6.0.0)