isodoc.gemspec in isodoc-1.5.0 vs isodoc.gemspec in isodoc-1.5.1

@@ -48,6 +48,7 @@
   spec.add_development_dependency "guard-rspec", "~> 4.7"
   spec.add_development_dependency "rspec", "~> 3.6"
   spec.add_development_dependency "rubocop", "= 0.54.0"
   spec.add_development_dependency "simplecov", "~> 0.15"
   spec.add_development_dependency "timecop", "~> 0.9"
+  spec.add_development_dependency "rexml"
 end