diff --git a/Developing.md b/Developing.md
index 7f16e69..263df8a 100644
--- a/Developing.md
+++ b/Developing.md
@@ -1,5 +1,6 @@
 * [Philosophy](Philosophy)
 * [API Status](API-Status)
+* [Test Servers](Test-Servers)
 * [Project structure](Project-structure)
 * [Coding style](Coding-style)
 * [Understanding the Type Language](Understanding-the-Type-Language)