diff --git a/Gemfile.lock b/Gemfile.lock
index 7ec8752..1808bf2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -295,7 +295,7 @@ PLATFORMS
   x86_64-linux-musl
 
 DEPENDENCIES
-  github-pages
+  github-pages (~> 228)
   http_parser.rb (~> 0.6.0)
   jekyll-feed (~> 0.12)
   minima (~> 2.5)