diff --git a/diff-lcs.gemspec b/diff-lcs.gemspec
index 2bc921d..7a0254d 100644
--- a/diff-lcs.gemspec
+++ b/diff-lcs.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
   s.extra_rdoc_files = ["Code-of-Conduct.md".freeze, "Contributing.md".freeze, "History.md".freeze, "License.md".freeze, "Manifest.txt".freeze, "README.rdoc".freeze, "docs/COPYING.txt".freeze, "docs/artistic.txt".freeze]
   s.files = [".rspec".freeze, "Code-of-Conduct.md".freeze, "Contributing.md".freeze, "History.md".freeze, "License.md".freeze, "Manifest.txt".freeze, "README.rdoc".freeze, "Rakefile".freeze, "bin/htmldiff".freeze, "bin/ldiff".freeze, "docs/COPYING.txt".freeze, "docs/artistic.txt".freeze, "lib/diff-lcs.rb".freeze, "lib/diff/lcs.rb".freeze, "lib/diff/lcs/array.rb".freeze, "lib/diff/lcs/backports.rb".freeze, "lib/diff/lcs/block.rb".freeze, "lib/diff/lcs/callbacks.rb".freeze, "lib/diff/lcs/change.rb".freeze, "lib/diff/lcs/htmldiff.rb".freeze, "lib/diff/lcs/hunk.rb".freeze, "lib/diff/lcs/internals.rb".freeze, "lib/diff/lcs/ldiff.rb".freeze, "lib/diff/lcs/string.rb".freeze, "spec/change_spec.rb".freeze, "spec/diff_spec.rb".freeze, "spec/fixtures/aX".freeze, "spec/fixtures/bXaX".freeze, "spec/fixtures/ds1.csv".freeze, "spec/fixtures/ds2.csv".freeze, "spec/fixtures/ldiff/output.diff".freeze, "spec/fixtures/ldiff/output.diff-c".freeze, "spec/fixtures/ldiff/output.diff-e".freeze, "spec/fixtures/ldiff/output.diff-f".freeze, "spec/fixtures/ldiff/output.diff-u".freeze, "spec/fixtures/ldiff/output.diff.chef".freeze, "spec/fixtures/ldiff/output.diff.chef-c".freeze, "spec/fixtures/ldiff/output.diff.chef-e".freeze, "spec/fixtures/ldiff/output.diff.chef-f".freeze, "spec/fixtures/ldiff/output.diff.chef-u".freeze, "spec/fixtures/ldiff/output.diff.chef2".freeze, "spec/fixtures/ldiff/output.diff.chef2-c".freeze, "spec/fixtures/ldiff/output.diff.chef2-d".freeze, "spec/fixtures/ldiff/output.diff.chef2-e".freeze, "spec/fixtures/ldiff/output.diff.chef2-f".freeze, "spec/fixtures/ldiff/output.diff.chef2-u".freeze, "spec/fixtures/new-chef".freeze, "spec/fixtures/new-chef2".freeze, "spec/fixtures/old-chef".freeze, "spec/fixtures/old-chef2".freeze, "spec/hunk_spec.rb".freeze, "spec/issues_spec.rb".freeze, "spec/lcs_spec.rb".freeze, "spec/ldiff_spec.rb".freeze, "spec/patch_spec.rb".freeze, "spec/sdiff_spec.rb".freeze, "spec/spec_helper.rb".freeze, "spec/traverse_balanced_spec.rb".freeze, "spec/traverse_sequences_spec.rb".freeze]
   s.homepage = "https://github.com/halostatue/diff-lcs".freeze
-  s.licenses = ["MIT".freeze, "Artistic-2.0".freeze, "GPL-2.0-or-later".freeze]
+  s.licenses = ["MIT".freeze, "Artistic-1.0-Perl".freeze, "GPL-2.0-or-later".freeze]
   s.rdoc_options = ["--main".freeze, "README.rdoc".freeze]
   s.required_ruby_version = Gem::Requirement.new(">= 1.8".freeze)
   s.rubygems_version = "3.5.3".freeze