diff --git a/Rakefile b/Rakefile
index cccf142..49db774 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,4 +1,3 @@
-# encoding: utf-8
 # frozen_string_literal: true
 
 require "bundler/gem_tasks"
diff --git a/kaminari-core/test/requests/navigation_test.rb b/kaminari-core/test/requests/navigation_test.rb
index 222da28..2bafd5e 100644
--- a/kaminari-core/test/requests/navigation_test.rb
+++ b/kaminari-core/test/requests/navigation_test.rb
@@ -1,4 +1,3 @@
-# encoding: UTF-8
 # frozen_string_literal: true
 require 'test_helper'
 
diff --git a/kaminari-core/test/requests/request_format_test.rb b/kaminari-core/test/requests/request_format_test.rb
index 747f4ad..c5a177b 100644
--- a/kaminari-core/test/requests/request_format_test.rb
+++ b/kaminari-core/test/requests/request_format_test.rb
@@ -1,4 +1,3 @@
-# encoding: UTF-8
 # frozen_string_literal: true
 require 'test_helper'