diff --git a/packages/vat-data/package.json b/packages/vat-data/package.json
index b824afca2562..3ba8f281db12 100644
--- a/packages/vat-data/package.json
+++ b/packages/vat-data/package.json
@@ -32,6 +32,9 @@
   "ava": {
     "require": [
       "@endo/init/debug.js"
+    ],
+    "files": [
+      "test/**/test-*.js"
     ]
   },
   "publishConfig": {
diff --git a/packages/vat-data/test/prepare-test-env-ava.js b/packages/vat-data/test/prepare-test-env-ava.js
new file mode 100644
index 000000000000..718c306fa121
--- /dev/null
+++ b/packages/vat-data/test/prepare-test-env-ava.js
@@ -0,0 +1,9 @@
+// eslint-disable-next-line import/no-extraneous-dependencies
+import './prepare-test-env.js';
+
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { wrapTest } from '@endo/ses-ava';
+import rawTest from 'ava';
+
+/** @type {typeof rawTest} */
+export const test = wrapTest(rawTest);
diff --git a/packages/vat-data/test/prepare-test-env.js b/packages/vat-data/test/prepare-test-env.js
new file mode 100644
index 000000000000..4252aeaea3c1
--- /dev/null
+++ b/packages/vat-data/test/prepare-test-env.js
@@ -0,0 +1 @@
+import '@agoric/swingset-liveslots/tools/prepare-test-env.js';
diff --git a/packages/vat-data/test/absent.test.js b/packages/vat-data/test/test-absent.js
similarity index 100%
rename from packages/vat-data/test/absent.test.js
rename to packages/vat-data/test/test-absent.js
diff --git a/packages/vat-data/test/test-durable-classes.js b/packages/vat-data/test/test-durable-classes.js
index 65e06ce45036..b79d35097f09 100644
--- a/packages/vat-data/test/test-durable-classes.js
+++ b/packages/vat-data/test/test-durable-classes.js
@@ -1,8 +1,8 @@
 // Modeled on test-heap-classes.js
 
-import '@agoric/swingset-liveslots/tools/prepare-test-env.js';
+import { test } from './prepare-test-env-ava.js';
 
-import test from 'ava';
+// eslint-disable-next-line import/order
 import { M } from '@agoric/store';
 import {
   makeKindHandle,
diff --git a/packages/vat-data/test/test-prepare.js b/packages/vat-data/test/test-prepare.js
index 15d9274efae5..0ddda5e07a25 100644
--- a/packages/vat-data/test/test-prepare.js
+++ b/packages/vat-data/test/test-prepare.js
@@ -1,8 +1,8 @@
 // Modeled on test-heap-classes.js
 
-import '@agoric/swingset-liveslots/tools/prepare-test-env.js';
+import { test } from './prepare-test-env-ava.js';
 
-import test from 'ava';
+// eslint-disable-next-line import/order
 import { M } from '@agoric/store';
 import {
   prepareExoClass,
diff --git a/packages/vat-data/test/present.test.js b/packages/vat-data/test/test-present.js
similarity index 100%
rename from packages/vat-data/test/present.test.js
rename to packages/vat-data/test/test-present.js
diff --git a/packages/vat-data/test/test-scalar-only-keys.js b/packages/vat-data/test/test-scalar-only-keys.js
index 3111a5bb1404..e3cebfaf9410 100644
--- a/packages/vat-data/test/test-scalar-only-keys.js
+++ b/packages/vat-data/test/test-scalar-only-keys.js
@@ -1,8 +1,8 @@
 // From https://github.com/Agoric/agoric-sdk/pull/6903#discussion_r1098067133
 
-import '@agoric/swingset-liveslots/tools/prepare-test-env.js';
+import { test } from './prepare-test-env-ava.js';
 
-import test from 'ava';
+// eslint-disable-next-line import/order
 import { M, makeScalarMapStore } from '@agoric/store';
 import { makeScalarBigMapStore } from '../src/vat-data-bindings.js';
 
diff --git a/packages/vat-data/test/test-virtual-classes.js b/packages/vat-data/test/test-virtual-classes.js
index 44d2c12c7159..7a0c0e4d84b5 100644
--- a/packages/vat-data/test/test-virtual-classes.js
+++ b/packages/vat-data/test/test-virtual-classes.js
@@ -1,8 +1,8 @@
 // Modeled on test-heap-classes.js
 
-import '@agoric/swingset-liveslots/tools/prepare-test-env.js';
+import { test } from './prepare-test-env-ava.js';
 
-import test from 'ava';
+// eslint-disable-next-line import/order
 import { M } from '@agoric/store';
 import {
   defineVirtualExoClass,