diff --git a/Gemfile b/Gemfile
index 30907198..b562119b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ ruby file: '.ruby-version'
 # Replace 'git' with 'https' protocol
 git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
-gem 'jekyll',  "4.3.3"
+gem 'jekyll',  '4.3.4'
 gem 'rack-jekyll'
 gem 'rake'           # for running tasks
 gem 'csv'            # not-default gem from Ruby 3.4.0
diff --git a/Gemfile.lock b/Gemfile.lock
index d95ec27f..887f6a86 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -119,7 +119,7 @@ GEM
     idobata (0.0.9)
       faraday (>= 0.8.8)
     io-event (1.6.5)
-    jekyll (4.3.3)
+    jekyll (4.3.4)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -320,7 +320,7 @@ DEPENDENCIES
   google-api-client
   html-proofer
   idobata
-  jekyll (= 4.3.3)
+  jekyll (= 4.3.4)
   jekyll-feed
   jekyll-include-cache
   jekyll-minifier