diff --git a/packages/mermaid/package.json b/packages/mermaid/package.json
index 90646a7853..496656bd43 100644
--- a/packages/mermaid/package.json
+++ b/packages/mermaid/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mermaid",
-  "version": "10.0.1",
+  "version": "10.0.2-rc.1",
   "description": "Markdown-ish syntax for generating flowcharts, sequence diagrams, class diagrams, gantt charts and git graphs.",
   "type": "module",
   "module": "./dist/mermaid.core.mjs",
diff --git a/packages/mermaid/src/diagrams/gantt/ganttDb.js b/packages/mermaid/src/diagrams/gantt/ganttDb.js
index 27ad1a0b80..475ee4de4e 100644
--- a/packages/mermaid/src/diagrams/gantt/ganttDb.js
+++ b/packages/mermaid/src/diagrams/gantt/ganttDb.js
@@ -1,8 +1,8 @@
 import { sanitizeUrl } from '@braintree/sanitize-url';
 import dayjs from 'dayjs';
-import dayjsIsoWeek from 'dayjs/plugin/isoWeek';
-import dayjsCustomParseFormat from 'dayjs/plugin/customParseFormat';
-import dayjsAdvancedFormat from 'dayjs/plugin/advancedFormat';
+import dayjsIsoWeek from 'dayjs/plugin/isoWeek.js';
+import dayjsCustomParseFormat from 'dayjs/plugin/customParseFormat.js';
+import dayjsAdvancedFormat from 'dayjs/plugin/advancedFormat.js';
 import { log } from '../../logger';
 import * as configApi from '../../config';
 import utils from '../../utils';