diff --git a/src/chains/base.ts b/src/chains/base.ts
index 6201caf8..200f14e9 100644
--- a/src/chains/base.ts
+++ b/src/chains/base.ts
@@ -105,6 +105,8 @@ export enum ChainKey {
   // Testnet
   ARCT = 'arct',
   OPST = 'opst',
+  BAST = 'bast',
+  ARBS = 'arbs',
 }
 
 export enum ChainId {
@@ -212,4 +214,6 @@ export enum ChainId {
   // Testnet
   ARCT = 5042002,
   OPST = 11155420,
+  BAST = 84532,
+  ARBS = 421614,
 }