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-rw-r--r--lib/irb/irb.gemspec2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/irb/irb.gemspec b/lib/irb/irb.gemspec
index 6ed327a273..b29002f593 100644
--- a/lib/irb/irb.gemspec
+++ b/lib/irb/irb.gemspec
@@ -42,5 +42,5 @@ Gem::Specification.new do |spec|
spec.required_ruby_version = Gem::Requirement.new(">= 2.7")
spec.add_dependency "reline", ">= 0.4.2"
- spec.add_dependency "rdoc"
+ spec.add_dependency "rdoc", ">= 4.0.0"
end