rumale.gemspec in rumale-0.21.0 vs rumale.gemspec in rumale-0.22.0

@@ -43,6 +43,7 @@
     'documentation_uri' => 'https://yoshoku.github.io/rumale/doc/',
     'bug_tracker_uri' => 'https://github.com/yoshoku/rumale/issues'
   }
 
   spec.add_runtime_dependency 'numo-narray', '>= 0.9.1'
+  spec.add_runtime_dependency 'lbfgsb', '>=0.3.0'
 end