isodoc.gemspec in isodoc-0.9.14 vs isodoc.gemspec in isodoc-0.9.15

@@ -28,10 +28,10 @@
   spec.test_files    = `git ls-files -- {spec}/*`.split("\n")
   spec.required_ruby_version = Gem::Requirement.new(">= 2.3.0")
 
   spec.add_dependency "asciimath"
   spec.add_dependency "htmlentities", "~> 4.3.4"
-  spec.add_dependency "nokogiri"
+  spec.add_dependency "nokogiri", ">= 1"
   spec.add_dependency "ruby-xslt"
   spec.add_dependency "thread_safe"
   spec.add_dependency "uuidtools"
   spec.add_dependency "html2doc", "~> 0.8.6"
   spec.add_dependency "liquid"