diff --git a/src/GridFieldAddNewInlineButton.php b/src/GridFieldAddNewInlineButton.php
index 4dcb729..0d888b4 100755
--- a/src/GridFieldAddNewInlineButton.php
+++ b/src/GridFieldAddNewInlineButton.php
@@ -26,9 +26,6 @@ class GridFieldAddNewInlineButton extends AbstractGridFieldComponent implements
     GridField_HTMLProvider,
     GridField_SaveHandler
 {
-    /**
-     * @skipUpgrade
-     */
     const POST_KEY = 'GridFieldAddNewInlineButton';
 
     private $fragment;
diff --git a/src/GridFieldAddNewMultiClass.php b/src/GridFieldAddNewMultiClass.php
index 2bf5ae7..95a3e05 100755
--- a/src/GridFieldAddNewMultiClass.php
+++ b/src/GridFieldAddNewMultiClass.php
@@ -28,9 +28,6 @@ class GridFieldAddNewMultiClass extends AbstractGridFieldComponent implements
     GridField_HTMLProvider,
     GridField_URLHandler
 {
-    /**
-     * @skipUpgrade
-     */
     const POST_KEY = 'GridFieldAddNewMultiClass';
 
     private static $allowed_actions = array(
diff --git a/src/GridFieldEditableColumns.php b/src/GridFieldEditableColumns.php
index c48eb16..e8f72dc 100644
--- a/src/GridFieldEditableColumns.php
+++ b/src/GridFieldEditableColumns.php
@@ -40,9 +40,6 @@ class GridFieldEditableColumns extends GridFieldDataColumns implements
     GridField_SaveHandler,
     GridField_URLHandler
 {
-    /**
-     * @skipUpgrade
-     */
     const POST_KEY = 'GridFieldEditableColumns';
 
     private static $allowed_actions = array(