diff --git a/README.md b/README.md
index ea5e1a87e..8771e861a 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,8 @@ If you think any of the roadmaps can be improved, please do open a PR with any u
 
 ## 👬 Contribution
 
+The roadmaps are built using [Balsamiq](https://balsamiq.com/products/mockups/). Project file can be found at `/project-files` directory. To modify any of the roadmaps, open Balsamiq, click **Project > Import > Mockup JSON**, it will open the roadmap for you, update it, upload and update the images in readme and create a PR.		
+
 - Open pull request with improvements
 - Discuss ideas in issues
 - Spread the word