diff --git a/packages/types/src/api/cardano.ts b/packages/types/src/api/cardano.ts
index b8104cc3da..75f3273b15 100644
--- a/packages/types/src/api/cardano.ts
+++ b/packages/types/src/api/cardano.ts
@@ -155,4 +155,5 @@ export type ApiProtocolParams = Readonly<{
     constant: string
   }
   poolDeposit: string
+  epoch: number
 }>