diff --git a/.rubocop.yml b/.rubocop.yml
index 15671dc..083385d 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -3,7 +3,7 @@ require:
   - rubocop-rake
 
 AllCops:
-  TargetRubyVersion: 2.6
+  TargetRubyVersion: 2.5
   SuggestExtensions: false
 
 Style/StringLiterals:
diff --git a/uuid_attribute.gemspec b/uuid_attribute.gemspec
index cb0ec24..1e870c3 100644
--- a/uuid_attribute.gemspec
+++ b/uuid_attribute.gemspec
@@ -12,7 +12,7 @@ Gem::Specification.new do |spec|
   spec.summary = "UUID attribute for ActiveRecord"
   spec.description = "UUID attribute for ActiveRecord"
   spec.homepage = "https://github.com/iugu/uuid_attribute"
-  spec.required_ruby_version = ">= 2.6.0"
+  spec.required_ruby_version = ">= 2.5.0"
   spec.metadata = {
     "homepage_uri"      => "https://github.com/iugu/uuid_attribute",
     "documentation_uri" => "https://github.com/iugu/uuid_attribute",