diff --git a/.ruby-version b/.ruby-version
index 6a81b4c..0aec50e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.7.8
+3.1.4
diff --git a/Gemfile b/Gemfile
index c0e0727..895c962 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ ruby File.read(".ruby-version").strip
 
 git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
-gem "jekyll", "~> 4.3"
+gem "jekyll", "~> 4.1"
 gem "liquid-c"
 gem "jekyll-last-modified-at", git: "https://github.com/maximevaillancourt/jekyll-last-modified-at", branch: "add-support-for-files-in-git-submodules"
 
diff --git a/Gemfile.lock b/Gemfile.lock
index fdc1511..5189edb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,13 +83,13 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (~> 4.3)
+  jekyll (~> 4.1)
   jekyll-last-modified-at!
   liquid-c
   nokogiri
 
 RUBY VERSION
-   ruby 2.7.8p225
+   ruby 3.1.4p223
 
 BUNDLED WITH
    2.1.4