1 files changed, 3 insertions, 3 deletions
diff --git a/activemodel/lib/active_model/mass_assignment_security/permission_set.rb b/activemodel/lib/active_model/mass_assignment_security/permission_set.rb
index 415ab0ad17..f104d0306c 100644
--- a/activemodel/lib/active_model/mass_assignment_security/permission_set.rb
+++ b/activemodel/lib/active_model/mass_assignment_security/permission_set.rb
@@ -2,7 +2,7 @@ require 'set'
 
 module ActiveModel
   module MassAssignmentSecurity
-    class PermissionSet < Set
+    class PermissionSet < Set #:nodoc:
 
       def +(values)
         super(values.compact.map(&:to_s))
@@ -23,14 +23,14 @@ module ActiveModel
       end
     end
 
-    class WhiteList < PermissionSet
+    class WhiteList < PermissionSet #:nodoc:
 
       def deny?(key)
         !include?(key)
       end
     end
 
-    class BlackList < PermissionSet
+    class BlackList < PermissionSet #:nodoc:
 
       def deny?(key)
         include?(key)