diff --git a/blockchain_example/index.json b/blockchain_example/index.json
index 2046f68a..338bf34d 100644
--- a/blockchain_example/index.json
+++ b/blockchain_example/index.json
@@ -18,6 +18,10 @@
       {
         "title": "Работа с Siberium",
         "text": "step3.md"
+      },
+      {
+        "title": "Работа с Sepolia",
+        "text": "step3.md"
       }
     ],
     "intro": {