diff --git a/src/auction.test.ts b/src/auction.test.ts
index b373db3..08d24b4 100644
--- a/src/auction.test.ts
+++ b/src/auction.test.ts
@@ -1,12 +1,12 @@
 import Long from 'long';
 
 import { coin } from '@cosmjs/amino';
+import { Coin } from '@cosmjs/proto-signing';
 
 import { Registry, Account, createBid } from './index';
 import { getConfig } from './testing/helper';
 import { DENOM } from './constants';
 import { Duration } from './proto/google/protobuf/duration';
-import { Coin } from '@cosmjs/proto-signing';
 
 jest.setTimeout(30 * 60 * 1000);
 const { chainId, rpcEndpoint, gqlEndpoint, privateKey, fee } = getConfig();
diff --git a/src/constants.ts b/src/constants.ts
index a54157d..1fa6289 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -1,2 +1,5 @@
 export const DENOM = 'alnt';
 export const DEFAULT_GAS_ESTIMATION_MULTIPLIER = 2;
+
+export const AUCTION_KIND_VICKREY = 'vickrey';
+export const AUCTION_KIND_PROVIDER = 'provider';