diff --git a/packages/builders/scripts/inter-protocol/upgrade-vaults.js b/packages/builders/scripts/inter-protocol/upgrade-vaults.js
index df0336370fcf..8a22dbbb1de6 100644
--- a/packages/builders/scripts/inter-protocol/upgrade-vaults.js
+++ b/packages/builders/scripts/inter-protocol/upgrade-vaults.js
@@ -2,7 +2,7 @@ import { makeHelpers } from '@agoric/deploy-script-support';
 import { makeInstallCache } from '@agoric/inter-protocol/src/proposals/utils.js';
 import { getManifestVaultsUpgrade } from '@agoric/inter-protocol/src/proposals/vaultsUpgrade.js';
 
-/** @type {import('@agoric/deploy-script-support/src/externalTypes.js').ProposalBuilder} */
+/** @type {import('@agoric/deploy-script-support/src/externalTypes.js').CoreEvalBuilder} */
 export const vaultsUpgradeProposalBuilder = async ({
   publishRef,
   install: install0,