diff --git a/README.md b/README.md
index 1497037..f9186f6 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-Be Readonly for ActiveRecord 3.x/4.x/5.x and Rails 3.x/4.x/5.x
+Be Readonly for ActiveRecord 3.x/4.x/5.x/6.x and Rails 3.x/4.x/5.x/6.x
 =====
 
 Makes any ActiveRecord model become read-only in Rails with:
diff --git a/activerecord-be_readonly.gemspec b/activerecord-be_readonly.gemspec
index ff7c6ab..f4011ff 100644
--- a/activerecord-be_readonly.gemspec
+++ b/activerecord-be_readonly.gemspec
@@ -8,9 +8,9 @@ Gem::Specification.new do |s|
   s.authors     = ['Gary S. Weaver']
   s.email       = ['garysweaver@gmail.com']
   s.homepage    = 'https://github.com/garysweaver/activerecord-be_readonly'
-  s.summary     = %q{Easy read-only models for ActiveRecord 3.x/4.x/5.x.}
-  s.description = %q{Makes read-only models easier to implement in ActiveRecord 3.x/4.x/5.x.}
+  s.summary     = %q{Easy read-only models for ActiveRecord 3.x/4.x/5.x/6.x.}
+  s.description = %q{Makes read-only models easier to implement in ActiveRecord 3.x/4.x/5.x/6.x.}
   s.files = Dir['lib/**/*'] + ['Rakefile', 'README.md']
   s.license = 'MIT'
-  s.add_dependency 'activerecord', '>= 3.0', '< 6'
+  s.add_dependency 'activerecord', '>= 3.0', '< 7'
 end