diff --git a/app/code/local/MSP/LTS2/Model/Cache.php b/app/code/local/MSP/LTS2/Model/Cache.php
index 1832889..56c7d5c 100644
--- a/app/code/local/MSP/LTS2/Model/Cache.php
+++ b/app/code/local/MSP/LTS2/Model/Cache.php
@@ -382,7 +382,15 @@ public function invalidateOnModelSave($modelInstance)
     {
         $invalidations = Mage::getSingleton('msp_ltsr2/cache')->getBlocksModelInvalidation($modelInstance);
         $tags = array();
-        
+
+        if ($modelInstance instanceof Mage_CatalogInventory_Model_Stock_Item) {
+            $parentIds = Mage::getSingleton('catalog/product_type_configurable')
+                ->getParentIdsByChild($modelInstance->getProductId());
+            foreach($parentIds as $parentId) {
+                $tags[] = 'CATALOG_PRODUCT_' . $parentId;
+            }
+        }
+
         foreach ($invalidations['global'] as $blockName) {
             $tags[] = 'MSP_BLOCK_NAME_'.$blockName;
         }
diff --git a/app/code/local/MSP/LTS2/etc/config.xml b/app/code/local/MSP/LTS2/etc/config.xml
index cdc9010..61d2667 100644
--- a/app/code/local/MSP/LTS2/etc/config.xml
+++ b/app/code/local/MSP/LTS2/etc/config.xml
@@ -19,7 +19,7 @@
 <config>
 	<modules>
 		<MSP_LTS2>
-			<version>1.0.1</version>
+			<version>1.0.2</version>
 		</MSP_LTS2>
 	</modules>