diff --git a/packages/ses/package.json b/packages/ses/package.json
index 4d6d557f57..b825381fe5 100644
--- a/packages/ses/package.json
+++ b/packages/ses/package.json
@@ -46,6 +46,7 @@
     "lint:js": "eslint '**/*.js'",
     "lint-fix": "eslint --fix '**/*.js'",
     "test": "yarn build && yarn ava",
+    "test:xs": "ava-xs",
     "qt": "yarn ava",
     "test:platform-compatability": "node test/package/test.cjs",
     "build": "rollup --config rollup.config.js",
@@ -74,6 +75,63 @@
     ],
     "require": []
   },
+  "ava-xs": {
+    "exclude": [
+      "# SIGSEGV https://github.com/Moddable-OpenSource/moddable/issues/627",
+      "test-global-object-mutability.js",
+      "# Function constructor bug https://github.com/Moddable-OpenSource/moddable/issues/623",
+      "test/test-break-function-eval.js",
+      "# Symbol toString https://github.com/Moddable-OpenSource/moddable/issues/621",
+      "test/error/test-assert-log.js",
+      "# before lockdown, compartments have the same privileged Function.prototype.constructor as the start compartment",
+      "test/test-lockdown.js",
+      "# e.stack is undefined; no captureStackTrace",
+      "test/test-v8-callsite-properties.js",
+      "test/error/test-tame-v8-error.js",
+      "test/error/test-tame-v8-error-unsafe.js",
+      "test-tame-v8-error-unit.js",
+      "# threw: get StaticModuleRecord: undefined variable",
+      "test/test-module-static-record.js",
+      "Compartment instance missing some properties with only ses/lockdown",
+      "test/test-module-compartment-instance.js",
+      "test/test-module-compartment-prototype.js",
+      "# import.meta.url requires enabling the parser plugin: 'importMeta'",
+      "test/test-package.js",
+      "# ava-xs console isn't like ava console",
+      "test/error/test-tame-console-unsafe-unsafeError-unfilteredError.js",
+      "test/error/test-tame-console-unsafe-unsafeError.js",
+      "test/error/test-tame-console-unsafeError.js",
+      "test/error/test-tame-console.js",
+      "test/error/test-tame-console-unfilteredError.js",
+      "# SES_IMPORT_REJECTED",
+      "test/test-compartment-transforms.js",
+      "test/test-evade-import-expression.js",
+      "test/test-reject-import-expression.js",
+      "# SES_HTML_COMMENT_REJECTED",
+      "test/test-evade-html-comment.js",
+      "test/test-reject-html-comment.js",
+      "# SES_EVAL_REJECTED",
+      "test/test-evaluate.js",
+      "test/test-global-object.js",
+      "test/test-lockdown-options.js",
+      "test/test-make-eval-function.js",
+      "test/test-make-evaluate-factory.js",
+      "test/test-make-function-constructor.js",
+      "test/test-reject-direct-eval.js",
+      "test/test-scope-handler.js",
+      "test/test-suppress-direct-eval.js",
+      "test/test-transforms.js",
+      "test/test-whitelist-intrinsics.js",
+      "# SKIP module-shim, babel",
+      "test/test-global-lexicals-modules.js",
+      "test/test-import-cjs.js",
+      "test/test-import-gauntlet.js",
+      "test/test-import-stack-traces.js",
+      "test/test-import.js",
+      "test/test-node.js",
+      "test/test-static-module-record-unit.js"
+    ]
+  },
   "eslintConfig": {
     "extends": [
       "@agoric"
@@ -93,4 +151,4 @@
     "ses.js",
     "src"
   ]
-}
+}
\ No newline at end of file