diff --git a/Gemfile.lock b/Gemfile.lock
index 02799da..54ffe45 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     calligraphy (0.3.1)
-      rails (~> 6.0, >= 5.1.6.2)
+      rails (>= 5.1.6.2)
 
 GEM
   remote: https://rubygems.org/
diff --git a/calligraphy.gemspec b/calligraphy.gemspec
index 0f75f49..74ee0ea 100644
--- a/calligraphy.gemspec
+++ b/calligraphy.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
 
   s.files = Dir['lib/**/*', 'LICENSE', 'README.md']
 
-  s.add_dependency 'rails', '~> 6.0', '>= 5.1.6.2'
+  s.add_dependency 'rails', '>= 5.1.6.2'
 
   s.add_development_dependency 'puma', '~> 4.1.0'
   s.add_development_dependency 'rake', '~> 12.3.3'