diff --git a/Gemfile.lock b/Gemfile.lock
index b01bbf0..e894696 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,27 +2,27 @@ PATH
   remote: .
   specs:
     onuro (0.1.6)
-      activesupport (~> 5.2.4.3)
+      activesupport (>= 5.2.4.3, < 7.0.5.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.4.3)
+    activesupport (7.0.4.3)
       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)
     ast (2.4.0)
     byebug (11.0.1)
     coderay (1.1.2)
-    concurrent-ruby (1.1.6)
+    concurrent-ruby (1.2.2)
     diff-lcs (1.3)
     docile (1.3.1)
-    i18n (1.8.3)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.2)
     json (2.2.0)
-    minitest (5.14.1)
+    minitest (5.18.0)
     parallel (1.17.0)
     parser (2.6.3.0)
       ast (~> 2.4.0)
@@ -56,9 +56,8 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    thread_safe (0.3.6)
-    tzinfo (1.2.7)
-      thread_safe (~> 0.1)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
     unicode-display_width (1.6.0)
 
 PLATFORMS
diff --git a/onuro.gemspec b/onuro.gemspec
index 7f3b624..9c1fc60 100644
--- a/onuro.gemspec
+++ b/onuro.gemspec
@@ -41,7 +41,7 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_runtime_dependency 'activesupport', '~> 5.2.4.3'
+  spec.add_runtime_dependency 'activesupport', '>= 5.2.4.3', '< 7.0.5.0'
 
   spec.add_development_dependency 'bundler', '~> 1.17'
   spec.add_development_dependency 'byebug', '~> 11.0'