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 [![](https://img.shields.io/badge/Informal_dependencies-Graph-green)](https://heplean.github.io/HepLean/InformalGraph)
 
 [![](https://img.shields.io/badge/View_The-Stats-blue)](https://heplean.github.io/HepLean/Stats)
-[![](https://img.shields.io/badge/Lean-v4.14.0-blue)](https://github.com/leanprover/lean4/releases/tag/v4.14.0)
+[![](https://img.shields.io/badge/Lean-v4.15.0-blue)](https://github.com/leanprover/lean4/releases/tag/v4.15.0)
 [![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/HEPLean/HepLean)
 
 A project to digitalize high energy physics.