diff --git a/Gemfile.lock b/Gemfile.lock
index c604ce6..6f4f281 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     notion-ruby-client (1.0.0.pre.beta1)
-      activesupport (~> 6)
+      activesupport (>= 6)
       dotenv
       faraday (>= 1.0)
       faraday_middleware
diff --git a/notion-ruby-client.gemspec b/notion-ruby-client.gemspec
index b537f9a..003d367 100644
--- a/notion-ruby-client.gemspec
+++ b/notion-ruby-client.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.homepage = 'http://github.com/orbit-love/notion-ruby-client'
   s.licenses = ['MIT']
   s.summary = 'Notion API client for Ruby.'
-  s.add_dependency 'activesupport', '~> 6'
+  s.add_dependency 'activesupport', '>= 6'
   s.add_dependency 'dotenv'
   s.add_dependency 'faraday', '>= 1.0'
   s.add_dependency 'faraday_middleware'
@@ -28,4 +28,4 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'timecop'
   s.add_development_dependency 'vcr'
   s.add_development_dependency 'webmock'
-end
\ No newline at end of file
+end