diff --git a/packages/agoric-cli/src/lib/format.js b/packages/agoric-cli/src/lib/format.js
index cad70a023dc2..9e50c4d6e33e 100644
--- a/packages/agoric-cli/src/lib/format.js
+++ b/packages/agoric-cli/src/lib/format.js
@@ -54,7 +54,9 @@ export const makeAmountFormatter = assets => amt => {
       return [issuerName, Number(value) / 10 ** decimalPlaces];
     case 'set':
       assert(Array.isArray(value));
+      // @ts-expect-error narrowed
       if (value[0]?.handle?.iface?.includes('InvitationHandle')) {
+        // @ts-expect-error narrowed
         return [issuerName, value.map(v => v.description)];
       }
       return [issuerName, value];
diff --git a/packages/solo/src/pipe-entrypoint.js b/packages/solo/src/pipe-entrypoint.js
index 0914ccfa36eb..81781f78f9da 100644
--- a/packages/solo/src/pipe-entrypoint.js
+++ b/packages/solo/src/pipe-entrypoint.js
@@ -29,6 +29,7 @@ const main = async () => {
       mutex.resolve(undefined);
       return;
     }
+    /** @type {any} */
     const as = parse(`${msg}`);
     deliverator(...as).then(() => send('go'));
   });
diff --git a/packages/solo/src/pipe.js b/packages/solo/src/pipe.js
index 4a743e4144e1..ade11381e697 100644
--- a/packages/solo/src/pipe.js
+++ b/packages/solo/src/pipe.js
@@ -31,6 +31,7 @@ export const connectToPipe = async ({ method, args, deliverInboundToMbx }) => {
       return;
     }
     // console.log('pipe.js', msg);
+    /** @type {any} */
     const as = parse(`${msg}`);
     deliverInboundToMbx(...as).then(() => cp.send('go'));
   });
diff --git a/packages/vat-data/src/vat-data-bindings.js b/packages/vat-data/src/vat-data-bindings.js
index a24f4c525bfa..11857763bdbb 100644
--- a/packages/vat-data/src/vat-data-bindings.js
+++ b/packages/vat-data/src/vat-data-bindings.js
@@ -9,8 +9,8 @@ import { provideLazy } from '@agoric/store';
 let VatDataGlobal;
 if ('VatData' in globalThis) {
   globalThis.VatData || Fail`VatData defined in global as null or undefined`;
-  // @ts-expect-error XXX
-  VatDataGlobal = globalThis.VatData;
+  // XXX types incompatibility
+  VatDataGlobal = /** @type {any} */ (globalThis.VatData);
 } else {
   // XXX this module has been known to get imported (transitively) in cases that
   // never use it so we make a version that will satisfy module resolution but
diff --git a/packages/vats/test/test-bootstrapPayment.js b/packages/vats/test/test-bootstrapPayment.js
index 7a79d986e194..e3555282816a 100644
--- a/packages/vats/test/test-bootstrapPayment.js
+++ b/packages/vats/test/test-bootstrapPayment.js
@@ -44,7 +44,6 @@ test.before(async (/** @type {CentralSupplyTestContext} */ t) => {
   };
 
   t.context = await deeplyFulfilled(
-    // @ts-expect-error XXX
     harden({
       zoe,
       feeMintAccess: feeMintAccessP,
diff --git a/packages/zoe/src/contractSupport/priceAuthorityTransform.js b/packages/zoe/src/contractSupport/priceAuthorityTransform.js
index 2fc0c726e98a..b0968cafc62b 100644
--- a/packages/zoe/src/contractSupport/priceAuthorityTransform.js
+++ b/packages/zoe/src/contractSupport/priceAuthorityTransform.js
@@ -11,7 +11,7 @@ import { makeNotifier } from '@agoric/notifier';
  * @param {Amount<'nat'>} amountIn
  * @param {Amount<'nat'>} amountOut
  * @param {import('@agoric/time').TimerService} timer
- * @param {import('@agoric/time').Timestamp} timestamp
+ * @param {import('@agoric/time').TimestampRecord} timestamp
  * @param {ERef<Mint<'set', PriceDescription>>} quoteMint
  * @returns {Promise<PriceQuote>}
  */
diff --git a/packages/zoe/tools/types-ambient.js b/packages/zoe/tools/types-ambient.js
index 59129b87f191..7515e76743c9 100644
--- a/packages/zoe/tools/types-ambient.js
+++ b/packages/zoe/tools/types-ambient.js
@@ -23,7 +23,7 @@
  * The quoted result of trading `amountIn`
  * @property {import('@endo/pass-style').RemotableObject & import('@agoric/time').TimerService} timer
  * The service that gave the `timestamp`
- * @property {import('@agoric/time').Timestamp} timestamp
+ * @property {import('@agoric/time').TimestampRecord} timestamp
  * A timestamp according to `timer` for the quote
  * @property {any} [conditions]
  * Additional conditions for the quote