diff --git a/Gemfile b/Gemfile
index cad5308..9844615 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'activesupport', '~> 5.2'
+gem 'activesupport', '~> 6.1'
 gem 'rubocop', '~> 1'
 gem 'sass', '~> 3.7'
 gem 'sinatra', '~> 2.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index 7ef2631..8d8e4ac 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,19 +1,20 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.6)
+    activesupport (6.1.7.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
     ast (2.4.2)
-    concurrent-ruby (1.1.9)
+    concurrent-ruby (1.2.2)
     daemons (1.4.1)
     eventmachine (1.2.7)
     ffi (1.15.4)
-    i18n (1.8.11)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    minitest (5.14.4)
+    minitest (5.18.0)
     multi_json (1.15.0)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
@@ -62,17 +63,17 @@ GEM
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)
-    thread_safe (0.3.6)
     tilt (2.0.10)
-    tzinfo (1.2.9)
-      thread_safe (~> 0.1)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
     unicode-display_width (2.0.0)
+    zeitwerk (2.6.7)
 
 PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  activesupport (~> 5.2)
+  activesupport (~> 6.1)
   rubocop (~> 1)
   sass (~> 3.7)
   sinatra (~> 2.1)