diff --git a/chains/chains_mainnet.json b/chains/chains_mainnet.json
index fe84c381..854760ae 100644
--- a/chains/chains_mainnet.json
+++ b/chains/chains_mainnet.json
@@ -7,6 +7,10 @@
         "id": "0005",
         "url": "http://haproxy/fuse"
     },
+    {
+        "id": "0009",
+        "url": "http://haproxy/polygon"
+    },
     {
         "id": "0021",
         "url": "http://haproxy/erigon"