diff --git a/packages/errors/index.js b/packages/errors/index.js
index 15320cbe1e..1a15cf0934 100644
--- a/packages/errors/index.js
+++ b/packages/errors/index.js
@@ -31,7 +31,10 @@ const missing = /** @type {const} */ ([
   'details',
   'Fail',
   'quote',
-  'bare',
+  // As of 2024-02, the Agoric chain's bootstrap vat runs with a version of SES that
+  // predates addition of the 'bare' method, so we must tolerate its absence and fall
+  // back to quote behavior in that environment (see below).
+  // 'bare',
   'makeAssert',
 ]).filter(name => globalAssert[name] === undefined);
 if (missing.length > 0) {
@@ -61,18 +64,23 @@ const assert = (value, optDetails, optErrorContructor) =>
   globalAssert(value, optDetails, optErrorContructor);
 Object.assign(assert, assertions);
 
+// As of 2024-02, the Agoric chain's bootstrap vat runs with a version of SES
+// that predates the addition of the 'bare' method, so we must fall back to
+// quote behavior for that environment.
+const bareOrQuote = bare || quote;
+
 export {
   // assertions
   assert,
   // related utilities that aren't assertions
-  bare,
+  bareOrQuote as bare,
   makeError,
   note,
   quote,
   redacted,
   throwRedacted,
   // conventional abbreviations and aliases
-  bare as b,
+  bareOrQuote as b,
   quote as q,
   redacted as X,
   throwRedacted as Fail,
diff --git a/packages/errors/package.json b/packages/errors/package.json
index d28ddff9e1..24bb39df65 100644
--- a/packages/errors/package.json
+++ b/packages/errors/package.json
@@ -43,6 +43,7 @@
     "@endo/ses-ava": "^1.1.1",
     "ava": "^5.3.0",
     "c8": "^7.14.0",
+    "ses0_18_3": "npm:ses@0.18.3",
     "tsd": "^0.28.1"
   },
   "files": [
diff --git a/packages/errors/test/test-ses0_18_3.js b/packages/errors/test/test-ses0_18_3.js
new file mode 100644
index 0000000000..6ff6e29a20
--- /dev/null
+++ b/packages/errors/test/test-ses0_18_3.js
@@ -0,0 +1,8 @@
+import test from 'ava';
+import 'ses0_18_3';
+
+test('shim bare on ses 0.18.3', async t => {
+  // SES v0.18.3 predates the `bare` export.
+  const namespace = await import('../index.js');
+  t.is(namespace.bare, namespace.quote);
+});
diff --git a/packages/static-module-record/test/test-static-module-record.js b/packages/static-module-record/test/test-static-module-record.js
index 035159786b..21bd72a6fd 100644
--- a/packages/static-module-record/test/test-static-module-record.js
+++ b/packages/static-module-record/test/test-static-module-record.js
@@ -792,3 +792,12 @@ test('should handle package "immer" source', t => {
     setUseProxies: ['vn', true],
   });
 });
+
+// https://github.com/endojs/endo/issues/2094
+test.failing('should support export of defaulted extraction', t => {
+  const _ = new StaticModuleRecord(`
+    const { x, y = x } = globalThis;
+    export { x, y };
+  `);
+  t.pass();
+});
diff --git a/yarn.lock b/yarn.lock
index 0e33a09b98..885dbf4c06 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7125,6 +7125,11 @@ server-destroy@^1.0.1:
   resolved "https://registry.yarnpkg.com/server-destroy/-/server-destroy-1.0.1.tgz#f13bf928e42b9c3e79383e61cc3998b5d14e6cdd"
   integrity sha512-rb+9B5YBIEzYcD6x2VKidaa+cqYBJQKnU4oe4E3ANwRRN56yk/ua1YCJT1n21NTS8w6CcOclAKNP3PhdCXKYtQ==
 
+"ses0_18_3@npm:ses@0.18.3":
+  version "0.18.3"
+  resolved "https://registry.yarnpkg.com/ses/-/ses-0.18.3.tgz#d21ac8a5eaa53c3bfde2f14fc660f4fbc4fdd6c3"
+  integrity sha512-deFT7cN12wE8FGDfXrZ/tUDkGofixzNl2bGc/PmF2oTAhh/x+Do6qfNhpmOMSAxnDdqtPinTcBAM94cKHvxjZg==
+
 set-blocking@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"