diff --git a/lazylead.gemspec b/lazylead.gemspec
old mode 100755
new mode 100644
index ad42ef9..3d44cba
--- a/lazylead.gemspec
+++ b/lazylead.gemspec
@@ -87,7 +87,7 @@ tasks instead of solving technical problems."
   s.add_development_dependency "net-ping", "2.0.8"
   s.add_development_dependency "rake", "12.3.3"
   s.add_development_dependency "random-port", "0.3.1"
-  s.add_development_dependency "rdoc", "6.1.1"
+  s.add_development_dependency "rdoc", "6.3.0"
   s.add_development_dependency "rubocop", "0.82"
   s.add_development_dependency "rubocop-minitest", "0.5.1"
   s.add_development_dependency "rubocop-performance", "1.5.2"