diff --git a/Gemfile b/Gemfile
index 3756306..5e22c95 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 gem 'rspec', '~> 2.13.0'
-gem 'activesupport', '~> 5.2.3'
+gem 'activesupport', '~> 6.1.7'
 gem 'grit'
diff --git a/Gemfile.lock b/Gemfile.lock
index 7e26d9f..e2695db 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,21 +1,22 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.3)
+    activesupport (6.1.7.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    concurrent-ruby (1.1.5)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
+    concurrent-ruby (1.2.2)
     diff-lcs (1.2.4)
     grit (2.5.0)
       diff-lcs (~> 1.1)
       mime-types (~> 1.15)
       posix-spawn (~> 0.3.6)
-    i18n (1.6.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     mime-types (1.23)
-    minitest (5.11.3)
+    minitest (5.18.0)
     posix-spawn (0.3.6)
     rspec (2.13.0)
       rspec-core (~> 2.13.0)
@@ -25,15 +26,15 @@ GEM
     rspec-expectations (2.13.0)
       diff-lcs (>= 1.1.3, < 2.0)
     rspec-mocks (2.13.1)
-    thread_safe (0.3.6)
-    tzinfo (1.2.5)
-      thread_safe (~> 0.1)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    zeitwerk (2.6.7)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activesupport (~> 5.2.3)
+  activesupport (~> 6.1.7)
   grit
   rspec (~> 2.13.0)