diff --git a/_Sidebar.md b/_Sidebar.md
index 8e03d2a..edd38c0 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -48,4 +48,5 @@
 
 **Developer**  
 [[API]]  
+[[Tengo scripting|Tengo]]  
 [[Making gateways|Gateway: developing new one]]