diff --git a/_data/chains/eip155-25.json b/_data/chains/eip155-25.json
index 1fbb6c9e..4363d5a7 100644
--- a/_data/chains/eip155-25.json
+++ b/_data/chains/eip155-25.json
@@ -2,6 +2,7 @@
   "name": "Cronos Mainnet Beta",
   "chain": "CRO",
   "rpc": ["https://evm.cronos.org"],
+  "features": [{ "name": "EIP1559" }],
   "faucets": [],
   "nativeCurrency": {
     "name": "Cronos",