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-rw-r--r--lib/forwardable/forwardable.gemspec1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/forwardable/forwardable.gemspec b/lib/forwardable/forwardable.gemspec
index 1d5f6eae63..122dd23bfd 100644
--- a/lib/forwardable/forwardable.gemspec
+++ b/lib/forwardable/forwardable.gemspec
@@ -18,6 +18,7 @@ Gem::Specification.new do |spec|
spec.homepage = "https://github.com/ruby/forwardable"
spec.licenses = ["Ruby", "BSD-2-Clause"]
+ spec.required_ruby_version = '>= 2.4.0'
spec.files = ["forwardable.gemspec", "lib/forwardable.rb", "lib/forwardable/impl.rb", "lib/forwardable/version.rb"]
spec.bindir = "exe"
spec.executables = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }