diff --git a/packages/base-zone/src/index.js b/packages/base-zone/src/index.js
index 3c3f036ff1f..5815984e058 100644
--- a/packages/base-zone/src/index.js
+++ b/packages/base-zone/src/index.js
@@ -6,3 +6,4 @@ export * from './exports.js';
 // Utilities for creating zones.
 export * from './make-once.js';
 export * from './keys.js';
+export * from './is-passable.js';
diff --git a/packages/base-zone/src/is-passable.js b/packages/base-zone/src/is-passable.js
new file mode 100644
index 00000000000..6a3fe59fbbe
--- /dev/null
+++ b/packages/base-zone/src/is-passable.js
@@ -0,0 +1,8 @@
+import { isPassable as realIsPassable } from '@endo/pass-style';
+
+/**
+ * @deprecated Import `isPassable` directly from `@endo/pass-style`
+ * @param {any} specimen
+ * @returns {specimen is Passable}
+ */
+export const isPassable = specimen => realIsPassable(specimen);