diff --git a/packages/builders/scripts/vats/upgrade-bank.js b/packages/builders/scripts/vats/upgrade-bank.js
index af6a8ea2522..dabd24d208c 100644
--- a/packages/builders/scripts/vats/upgrade-bank.js
+++ b/packages/builders/scripts/vats/upgrade-bank.js
@@ -14,6 +14,6 @@ export const defaultProposalBuilder = async ({ publishRef, install }) =>
 
 /** @type {import('@agoric/deploy-script-support/src/externalTypes.js').DeployScriptFunction} */
 export default async (homeP, endowments) => {
-  const { writeCoreProposal } = await makeHelpers(homeP, endowments);
-  await writeCoreProposal('upgrade-bank', defaultProposalBuilder);
+  const { writeCoreEval } = await makeHelpers(homeP, endowments);
+  await writeCoreEval('upgrade-bank', defaultProposalBuilder);
 };
diff --git a/packages/builders/scripts/vats/upgrade-psm.js b/packages/builders/scripts/vats/upgrade-psm.js
index 678f4a5449b..25f5130d04b 100644
--- a/packages/builders/scripts/vats/upgrade-psm.js
+++ b/packages/builders/scripts/vats/upgrade-psm.js
@@ -14,6 +14,6 @@ export const defaultProposalBuilder = async ({ publishRef, install }) =>
 
 /** @type {import('@agoric/deploy-script-support/src/externalTypes.js').DeployScriptFunction} */
 export default async (homeP, endowments) => {
-  const { writeCoreProposal } = await makeHelpers(homeP, endowments);
-  await writeCoreProposal('upgrade-psm', defaultProposalBuilder);
+  const { writeCoreEval } = await makeHelpers(homeP, endowments);
+  await writeCoreEval('upgrade-psm', defaultProposalBuilder);
 };
diff --git a/packages/vats/src/proposals/upgrade-psm-proposal.js b/packages/vats/src/proposals/upgrade-psm-proposal.js
index 1151077c61a..420223a7f3f 100644
--- a/packages/vats/src/proposals/upgrade-psm-proposal.js
+++ b/packages/vats/src/proposals/upgrade-psm-proposal.js
@@ -59,7 +59,7 @@ export const upgradePSMProposal = async (
   trace('Done.');
 };
 
-export const getManifestForUpgradingPSM = (_powers, { psmRef }) => ({
+export const getManifestForUpgradingPSM = ({ restoreRef }, { psmRef }) => ({
   manifest: {
     [upgradePSMProposal.name]: {
       consume: {
@@ -71,4 +71,5 @@ export const getManifestForUpgradingPSM = (_powers, { psmRef }) => ({
     },
   },
   options: { psmRef },
+  installations: { psm: restoreRef(psmRef) },
 });