diff --git a/lib/helpers.js b/lib/helpers.js
index f1cd1639..58b9a771 100644
--- a/lib/helpers.js
+++ b/lib/helpers.js
@@ -1,10 +1,6 @@
 /*!
  * Copyright (c) 2023 Digital Bazaar, Inc. All rights reserved.
  */
-import {
-  contexts as credentialsContexts
-} from '@digitalbazaar/credentials-context';
-
 // Z and T must be uppercase
 // xml schema date time RegExp
 // @see https://www.w3.org/TR/xmlschema11-2/#dateTime