diff --git a/Gemfile.lock b/Gemfile.lock
index 772d5f8..8eb1ee8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,16 +8,17 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.0.2)
+    activesupport (6.0.3.7)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
+      zeitwerk (~> 2.2, >= 2.2.2)
     addressable (2.5.0)
       public_suffix (~> 2.0, >= 2.0.2)
     byebug (9.0.6)
     columnize (0.9.0)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.8)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     debugger (1.6.8)
@@ -32,12 +33,13 @@ GEM
     hashdiff (0.3.2)
     httparty (0.14.0)
       multi_xml (>= 0.5.2)
-    i18n (0.8.1)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (2.3.0)
-    minitest (5.10.1)
+    minitest (5.14.4)
     multi_xml (0.6.0)
     public_suffix (2.0.5)
-    rake (12.0.0)
+    rake (12.3.3)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
       rspec-expectations (~> 3.5.0)
@@ -55,23 +57,24 @@ GEM
     shoulda-matchers (3.1.1)
       activesupport (>= 4.0.0)
     thread_safe (0.3.6)
-    tzinfo (1.2.2)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     webmock (2.3.2)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
+    zeitwerk (2.4.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activesupport (= 5.0.2)
+  activesupport (= 6.0.3.7)
   byebug
   debugger
   faker (= 1.7.3)
   mbsy!
-  rake (= 12.0.0)
+  rake (= 12.3.3)
   rspec (= 3.5.0)
   shoulda-matchers (= 3.1.1)
   webmock (= 2.3.2)
diff --git a/mbsy.gemspec b/mbsy.gemspec
index 8dffee7..df012ee 100644
--- a/mbsy.gemspec
+++ b/mbsy.gemspec
@@ -27,5 +27,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency('webmock', '2.3.2')
   s.add_development_dependency('faker', '1.7.3')
   s.add_development_dependency('shoulda-matchers', '3.1.1')
-  s.add_development_dependency('activesupport', '6.0.3.1')
+  s.add_development_dependency('activesupport', '6.0.3.7')
 end