diff --git a/UPGRADE.md b/UPGRADE.md
index a095a5aecd6c8d74c102da5fe61153a4fcc54e5e..1cbe181149979059126eb026f481ae3c0a22cc44 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,4 +1,8 @@
 # Version 1.X.X to Version 2.0.0
 
-`vimeoLightbox.js` (deprecated since 1.1.0) using magnific-popup and jQuery removed in favor of `sgYoutubeLightbox.js` (vanilla JS).
+`vimeoLightbox.js` (deprecated since 1.1.0) using magnific-popup and jQuery removed in favor of `sgVimeoLightbox.js` (vanilla JS).
 Extension project_theme_lightbox required starting with version 2.0.0.
+
+## Version 1.1  ```project_theme_lightbox``` integration
+- The magnific popup integration is deprecated and will be removed in later versions.
+- Implement JavaScript according to the readme after integrating ```project_theme_lightbox```