diff --git a/Gemfile.lock b/Gemfile.lock
index 7e738e4d..9c2a6b51 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,19 +15,18 @@ GEM
   remote: https://rubygems.org/
   specs:
     RedCloth (4.3.4)
-    activesupport (7.1.5.1)
+    activesupport (7.2.2.1)
       base64
       benchmark (>= 0.3)
       bigdecimal
-      concurrent-ruby (~> 1.0, >= 1.0.2)
+      concurrent-ruby (~> 1.0, >= 1.3.1)
       connection_pool (>= 2.2.5)
       drb
       i18n (>= 1.6, < 2)
       logger (>= 1.4.2)
       minitest (>= 5.1)
-      mutex_m
       securerandom (>= 0.3)
-      tzinfo (~> 2.0)
+      tzinfo (~> 2.0, >= 2.0.5)
     asciidoctor (2.0.23)
     base64 (0.2.0)
     benchmark (0.4.0)
@@ -57,7 +56,6 @@ GEM
     mini_mime (1.1.5)
     mini_portile2 (2.8.8)
     minitest (5.25.5)
-    mutex_m (0.3.0)
     nokogiri (1.18.7)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
@@ -92,7 +90,7 @@ GEM
     sanitize (6.1.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
-    securerandom (0.3.2)
+    securerandom (0.4.1)
     stringio (3.1.6)
     tdiff (0.4.0)
     twitter-text (1.14.7)
@@ -119,7 +117,7 @@ PLATFORMS
 
 DEPENDENCIES
   RedCloth
-  activesupport (~> 7.1.5)
+  activesupport (~> 7.2.2)
   asciidoctor (~> 2.0.5)
   commonmarker!
   creole (~> 0.5.0)
diff --git a/github-markup.gemspec b/github-markup.gemspec
index 4329a901..36ab7e0f 100644
--- a/github-markup.gemspec
+++ b/github-markup.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.require_paths = %w[lib]
 
   s.add_development_dependency 'rake', '~> 12'
-  s.add_development_dependency 'activesupport', '~> 7.1.5'
+  s.add_development_dependency 'activesupport', '~> 7.2.2'
   s.add_development_dependency 'minitest', '~> 5.4', '>= 5.4.3'
   s.add_development_dependency 'html-pipeline', '~> 1.0'
   s.add_development_dependency 'sanitize', '>= 4.6.3'