diff --git a/rubyXL.gemspec b/rubyXL.gemspec
index cb7f5b51..ca11e434 100644
--- a/rubyXL.gemspec
+++ b/rubyXL.gemspec
@@ -24,7 +24,6 @@ Gem::Specification.new do |s|
     ".rubocop.yml",
     "CHANGELOG.md",
     "Gemfile",
-    "Gemfile.lock",
     "LICENSE.txt",
     "README.rdoc",
     "Rakefile",