diff --git a/after_init.rb b/after_init.rb
index 5f6042a8..332fcca3 100644
--- a/after_init.rb
+++ b/after_init.rb
@@ -40,7 +40,7 @@ def init
                        :dmsf_folders_copy => [:new, :copy, :move],
                        :dmsf_context_menus => [:dmsf]}
       pmap.permission :file_manipulation,
-                      {:dmsf_files => [:create_revision, :lock, :unlock, :delete_revision, :notify_activate,
+                      {:dmsf_files => [:create_revision, :lock, :unlock, :delete_revision, :obsolete_revision, :notify_activate,
                                        :notify_deactivate, :restore],
                        :dmsf_upload => [:upload_files, :upload_file, :upload, :commit_files, :commit,
                                         :delete_dmsf_attachment, :delete_dmsf_link_attachment],
diff --git a/app/controllers/dmsf_files_controller.rb b/app/controllers/dmsf_files_controller.rb
index b025bf84..532ed6c5 100644
--- a/app/controllers/dmsf_files_controller.rb
+++ b/app/controllers/dmsf_files_controller.rb
@@ -23,8 +23,8 @@ class DmsfFilesController < ApplicationController
 
   menu_item :dmsf
 
-  before_action :find_file, :except => [:delete_revision]
-  before_action :find_revision, :only => [:delete_revision]
+  before_action :find_file, :except => [:delete_revision, :obsolete_revision]
+  before_action :find_revision, :only => [:delete_revision, :obsolete_revision]
   before_action :authorize
   before_action :tree_view, :only => [:delete]
   before_action :permissions
@@ -244,6 +244,18 @@ class DmsfFilesController < ApplicationController
     redirect_to :action => 'show', :id => @file
   end
 
+  def obsolete_revision
+    if @revision
+      if @revision.obsolete()
+        flash[:notice] = l(:notice_revision_obsoleted)
+        log_activity('obsoleted')
+      else
+        flash[:error] = @revision.errors.full_messages.join(', ')
+      end
+    end
+    redirect_to :action => 'show', :id => @file
+  end
+
   def lock
     if @file.locked?
       flash[:warning] = l(:warning_file_already_locked)
diff --git a/app/models/dmsf_file_revision.rb b/app/models/dmsf_file_revision.rb
index 5acaec06..6be846a7 100644
--- a/app/models/dmsf_file_revision.rb
+++ b/app/models/dmsf_file_revision.rb
@@ -109,6 +109,16 @@ class DmsfFileRevision < ActiveRecord::Base
     end
   end
 
+  def obsolete()
+    if self.dmsf_file.locked_for_user?
+      errors[:base] << l(:error_file_is_locked)
+      return false
+    end
+    
+    self.workflow = DmsfWorkflow::STATE_OBSOLETE
+    save
+  end
+
   def restore
     self.deleted = DmsfFile::STATUS_ACTIVE
     self.deleted_by_user = nil
@@ -227,6 +237,8 @@ class DmsfFileRevision < ActiveRecord::Base
         str + l(:title_assigned)
       when DmsfWorkflow::STATE_REJECTED
         str + l(:title_rejected)
+      when DmsfWorkflow::STATE_OBSOLETE
+        str + l(:title_obsolete)
       else
         str + l(:title_none)
     end
diff --git a/app/models/dmsf_workflow.rb b/app/models/dmsf_workflow.rb
index 114cad35..0e7f773b 100644
--- a/app/models/dmsf_workflow.rb
+++ b/app/models/dmsf_workflow.rb
@@ -62,6 +62,7 @@ class DmsfWorkflow < ActiveRecord::Base
   STATE_WAITING_FOR_APPROVAL = 1
   STATE_APPROVED = 2
   STATE_REJECTED = 4
+  STATE_OBSOLETE = 5
 
   STATUS_LOCKED = 0
   STATUS_ACTIVE = 1
@@ -239,5 +240,5 @@ class DmsfWorkflow < ActiveRecord::Base
       end
     end
   end
-
+  
 end
diff --git a/app/views/dmsf_files/show.html.erb b/app/views/dmsf_files/show.html.erb
index 7ea67540..3b0dee12 100644
--- a/app/views/dmsf_files/show.html.erb
+++ b/app/views/dmsf_files/show.html.erb
@@ -91,6 +91,10 @@
             delete_revision_path(revision),
             :data => {:confirm => l(:text_are_you_sure)},
             :title => l(:title_delete_revision) if @file_delete_allowed && (@file.dmsf_file_revisions.visible.count > 1) %>
+          <%= link_to image_tag('/../../plugin_assets/redmine_dmsf/images/obsolete.png'),
+            obsolete_revision_path(revision),
+            :data => {:confirm => l(:text_are_you_sure)},
+            :title => l(:title_obsolete_revision) if @file_delete_allowed && (revision.workflow == DmsfWorkflow::STATE_APPROVED) %>
         </div>
         <i><%= l(:info_revision, :rev => revision.id) %></i>
         <%= (revision.source_revision.nil? ? l(:label_created) : l(:label_changed)).downcase %>
diff --git a/assets/images/obsolete.png b/assets/images/obsolete.png
new file mode 100644
index 00000000..e69de29b
diff --git a/config/locales/en.yml b/config/locales/en.yml
index c400fb7b..52b69613 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -48,6 +48,7 @@ en:
   notice_file_deleted: File deleted
   error_at_least_one_revision_must_be_present: At least one revision must be present
   notice_revision_deleted: Revision deleted
+  notice_revision_obsoleted: Revision obsoleted
   warning_one_of_files_locked: One of files locked
   notice_file_revision_created: File revision created
   notice_your_preferences_were_saved: Your preferences were saved
@@ -115,6 +116,7 @@ en:
   heading_revisions: Revisions
   title_download: Download
   title_delete_revision: Delete revision
+  title_obsolete_revision: Obsolete revision
   label_created: Created
   label_changed: Changed
   info_changed_by_user: "%{changed} by"
@@ -270,6 +272,7 @@ en:
   title_assigned: Assigned
   title_approval: Approval
   title_rejected: Rejected
+  title_obsolete: Obsolete
   dmsf_and: AND
   dmsf_or: OR
   dmsf_new_step: New step
diff --git a/config/locales/es.yml b/config/locales/es.yml
index 29c742f1..ae3d630b 100644
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -48,6 +48,7 @@ es:
   notice_file_deleted: Archivo borrado
   error_at_least_one_revision_must_be_present: al menos una revisión debe estar presente
   notice_revision_deleted: Revision eliminada correctamente
+  notice_revision_obsoleted: Revision obsoletada correctamente
   warning_one_of_files_locked: Uno de los archivos está bloqueado
   notice_file_revision_created: Revision de archivos creada correctamente
   notice_your_preferences_were_saved: Sus preferencias han sido guardadas correctamente
@@ -115,6 +116,7 @@ es:
   heading_revisions: Revisiones
   title_download: Descargar
   title_delete_revision: Eliminar revisión
+  title_obsolete_revision: Obsoletar revisión
   label_created: Creado
   label_changed: Modificado
   info_changed_by_user: "%{changed} por"
@@ -269,6 +271,7 @@ es:
   title_assigned: Asignado
   title_approval: Aprobar
   title_rejected: Rechazado
+  title_obsolete: Obsoleto
   dmsf_and: Y
   dmsf_or: O
   dmsf_new_step: Nuevo Paso
diff --git a/config/routes.rb b/config/routes.rb
index b62f861c..f9c4860a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -88,6 +88,7 @@ if Redmine::Plugin.installed? :redmine_dmsf
     post '/dmsf/files/:id/delete', :controller => 'dmsf_files', :action => 'delete', :as => 'delete_dmsf_files'
     post '/dmsf/files/:id/revision/create', :controller => 'dmsf_files', :action => 'create_revision'
     get '/dmsf/files/:id/revision/delete', :controller => 'dmsf_files', :action => 'delete_revision', :as => 'delete_revision'
+    get '/dmsf/files/:id/revision/obsolete', :controller => 'dmsf_files', :action => 'obsolete_revision', :as => 'obsolete_revision'
     get '/dmsf/files/:id/download', :to => 'dmsf_files#view', :download => '', :as => 'download_dmsf_file' # Otherwise will not route nil into the download param
     get '/dmsf/files/:id/view', :to => 'dmsf_files#view', :as => 'view_dmsf_file'
     get '/dmsf/files/:id', :controller => 'dmsf_files', :action => 'show', :as => 'dmsf_file'