diff --git a/Gemfile b/Gemfile
index 2f94f79..59e53c6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 # These were previously included in Ruby, but will be removed as of Ruby 3.4
-gem 'base64', '~> 0.2.0'
+gem 'base64', '~> 0.3.0'
 gem 'bigdecimal', '~> 3.1.9'
 
 gem 'jekyll-multiple-languages-plugin',
diff --git a/Gemfile.lock b/Gemfile.lock
index 24df652..b12ebad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,7 +17,7 @@ GEM
       zeitwerk (~> 2.3)
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
-    base64 (0.2.0)
+    base64 (0.3.0)
     bigdecimal (3.1.9)
     colorator (1.1.0)
     concurrent-ruby (1.3.3)
@@ -100,7 +100,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  base64 (~> 0.2.0)
+  base64 (~> 0.3.0)
   bigdecimal (~> 3.1.9)
   ffi (< 1.17.0)
   jekyll (~> 3.10)