diff --git a/Gemfile b/Gemfile
index 1112b9d..ae90d65 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,9 +1,5 @@
 # frozen_string_literal: true
 
-if ENV['JEKYLL_ENV'] == 'production'
-  source 'https://gems.sutty.nl'
-else
-  source 'https://rubygems.org'
-end
+source 'https://gems.sutty.nl'
 
 gemspec