diff --git a/src/Composer.php b/src/Composer.php
index c5f2fef..30b851b 100644
--- a/src/Composer.php
+++ b/src/Composer.php
@@ -3,6 +3,7 @@
 namespace Lean;
 
 use Composer\EventDispatcher\Event;
+use Kash\CacheInvalidator;
 
 class Composer
 {
@@ -48,6 +49,8 @@ class Composer
                 rmdir($dest);
 
                 $event->getIO()->write("Installation completed.");
+
+                static::postUpdate($event);
             }
             else {
                 $event->getIO()->writeError(sprintf("The user you are running this script with doesn't seem to have a writable permission on directory %s", static::createPath()));
@@ -61,9 +64,10 @@ class Composer
 
         $path = static::createPath('var/cache/version.cache');
 
-        if ( file_exists($path) ) {
-            $event->getIO()->write("removing cache file version to force a  '$path'");
-            unlink($path);
+        if ( is_writeable(dirname($path)) ) {
+            $event->getIO()->write("regenerating cache file version to invalidate cache for path '$path'");
+
+            new CacheInvalidator($path, true);
         }
     }