diff --git a/src/utils/ID.js b/src/utils/ID.js
index 81860f2c..9267ecf4 100644
--- a/src/utils/ID.js
+++ b/src/utils/ID.js
@@ -1,5 +1,5 @@
 
-import { AbstractType } from '../internals' // eslint-disable-line
+import { AbstractType } from '../internals.js' // eslint-disable-line
 
 import * as decoding from 'lib0/decoding.js'
 import * as encoding from 'lib0/encoding.js'