diff --git a/Gemfile b/Gemfile
index f7744b30..0f26071b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -48,9 +48,9 @@ gem 'image_processing'
 gem 'icalendar'
 gem 'inline_svg'
 gem 'httparty'
-gem 'safe_yaml', source: 'https://gems.sutty.nl'
+gem 'safe_yaml'
 gem 'jekyll', '~> 4.2'
-gem 'jekyll-data', source: 'https://gems.sutty.nl'
+gem 'jekyll-data'
 gem 'jekyll-commonmark'
 gem 'jekyll-images'
 gem 'jekyll-include-cache'
diff --git a/Gemfile.lock b/Gemfile.lock
index 00520efa..db7e601a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -599,7 +599,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   jekyll (~> 4.2)
   jekyll-commonmark
-  jekyll-data!
+  jekyll-data
   jekyll-images
   jekyll-include-cache
   kaminari
@@ -630,7 +630,7 @@ DEPENDENCIES
   rubocop-rails
   rubyzip
   rugged
-  safe_yaml!
+  safe_yaml
   sassc-rails
   selenium-webdriver
   sourcemap