diff --git a/docparser.gemspec b/docparser.gemspec
index 2ef3ba3..0fcbe9d 100644
--- a/docparser.gemspec
+++ b/docparser.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   spec.extra_rdoc_files = ['README.md', 'LICENSE']
 
   spec.add_runtime_dependency 'axlsx', '~> 2.0.1'
-  spec.add_runtime_dependency 'nokogiri', '~> 1.10.0'
+  spec.add_runtime_dependency 'nokogiri', '>= 1.10', '< 1.12'
   spec.add_runtime_dependency 'parallel', '~> 1.10'
 
   spec.add_development_dependency 'github-markup'