diff --git a/lib/obscenity.rb b/lib/obscenity.rb
index 071add5..bc4ecdb 100644
--- a/lib/obscenity.rb
+++ b/lib/obscenity.rb
@@ -1,3 +1,4 @@
+require 'psych'
 require 'obscenity/error'
 require 'obscenity/config'
 require 'obscenity/base'
diff --git a/lib/obscenity/base.rb b/lib/obscenity/base.rb
index 44063c7..be7be64 100644
--- a/lib/obscenity/base.rb
+++ b/lib/obscenity/base.rb
@@ -64,7 +64,7 @@ def replace(word)
       def set_list_content(list)
         case list
         when Array then list
-        when String, Pathname then YAML.load_file( list.to_s )
+        when String, Pathname then Psych.load_file( list.to_s )
         else []
         end
       end