diff --git a/.travis.yml b/.travis.yml
index 7a0ed92..3258c25 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,6 @@
 language: ruby
 rvm:
-  - 2.4
   - 2.6
-  - 2.7
 
 install: bundle install --jobs=3 --retry=3
 script: bundle exec rake
diff --git a/gemirro.gemspec b/gemirro.gemspec
index 024585b..ef3a626 100644
--- a/gemirro.gemspec
+++ b/gemirro.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
 
   s.files = File.read(File.expand_path('../MANIFEST', __FILE__)).split("\n")
 
-  s.required_ruby_version = '>= 2.4'
+  s.required_ruby_version = '>= 2.5'
 
   s.add_dependency 'addressable', '~>2.5'
   s.add_dependency 'builder', '~>3.2'