diff --git a/.ruby-version b/.ruby-version
index b0f6bf0c..7636e756 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.4.10
+4.0.5
diff --git a/Gemfile b/Gemfile
index 78e806ce..2b0e68f7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@
 source "https://rubygems.org"
 
 
-ruby "2.4.10"
+ruby "4.0.5"
 
 gem "jekyll", "4.2.0" # Ensure this matches the version you need
 gem "webrick" # Necessary if you're using Ruby 3.0.0+