diff --git a/core/lib/Drupal/Core/Template/TwigEnvironment.php b/core/lib/Drupal/Core/Template/TwigEnvironment.php
index 7587e6a..8d0e3ed 100644
--- a/core/lib/Drupal/Core/Template/TwigEnvironment.php
+++ b/core/lib/Drupal/Core/Template/TwigEnvironment.php
@@ -123,8 +123,8 @@ public function updateCompiledTemplate($cache_filename, $name) {
   public function getCacheFilename($name) {
     // We override the cache filename in order to avoid issues with not using
     // shared filesystems. The Twig templates for example rely on available Twig
-    // extensions, so we need to take into account the \Drupal::VERSION and
-    // deployment identifier, much like for the container itself.
+    // extensions, so we use the twig extension hash which varies by extensions
+    // and their mtime.
 
     if (!$this->cache) {
       return FALSE;