4 files changed, 4 insertions, 4 deletions
diff --git a/spec/ruby/library/stringio/bytes_spec.rb b/spec/ruby/library/stringio/bytes_spec.rb
index bf0d27615e..1c0607db6e 100644
--- a/spec/ruby/library/stringio/bytes_spec.rb
+++ b/spec/ruby/library/stringio/bytes_spec.rb
@@ -2,7 +2,7 @@ require_relative '../../spec_helper'
 require 'stringio'
 require_relative 'shared/each_byte'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   describe "StringIO#bytes" do
     it_behaves_like :stringio_each_byte, :bytes
   end
diff --git a/spec/ruby/library/stringio/chars_spec.rb b/spec/ruby/library/stringio/chars_spec.rb
index e3879c2cff..3383dcfc57 100644
--- a/spec/ruby/library/stringio/chars_spec.rb
+++ b/spec/ruby/library/stringio/chars_spec.rb
@@ -2,7 +2,7 @@ require_relative '../../spec_helper'
 require 'stringio'
 require_relative 'shared/each_char'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   describe "StringIO#chars" do
     it_behaves_like :stringio_each_char, :chars
   end
diff --git a/spec/ruby/library/stringio/codepoints_spec.rb b/spec/ruby/library/stringio/codepoints_spec.rb
index 6ca395c964..0dfaac2a29 100644
--- a/spec/ruby/library/stringio/codepoints_spec.rb
+++ b/spec/ruby/library/stringio/codepoints_spec.rb
@@ -3,7 +3,7 @@ require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 require_relative 'shared/codepoints'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
 
   # See redmine #1667
   describe "StringIO#codepoints" do
diff --git a/spec/ruby/library/stringio/lines_spec.rb b/spec/ruby/library/stringio/lines_spec.rb
index 0a2ab0d817..4a2aeac37e 100644
--- a/spec/ruby/library/stringio/lines_spec.rb
+++ b/spec/ruby/library/stringio/lines_spec.rb
@@ -2,7 +2,7 @@ require_relative '../../spec_helper'
 require 'stringio'
 require_relative 'shared/each'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   describe "StringIO#lines when passed a separator" do
     it_behaves_like :stringio_each_separator, :lines
   end