diff --git a/_Sidebar.md b/_Sidebar.md
index 574e723..bfba135 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -32,6 +32,7 @@
     - [If-Statements](if-Statement)
     - [Classes](Classes)
     - [Casting](Casting)
+    - [Arrays](Arrays)
   - [Pull request policy](Pull-request-policy)
   - [Folder structure](Folder-structure)
   - [Actions](Actions)