diff --git a/_Sidebar.md b/_Sidebar.md
index 6effe57..cb6a256 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -1,4 +1,5 @@
 [Start here](Home)
+[How to colaborate](How-to-colaborate)
 ## User manual
 * [First steps](First-steps)
 * Intended use and care