diff --git a/src/ol/util.js b/src/ol/util.js
index 07395da368..f5966f1c93 100644
--- a/src/ol/util.js
+++ b/src/ol/util.js
@@ -22,6 +22,7 @@
  * @param {!Function} childCtor Child constructor.
  * @param {!Function} parentCtor Parent constructor.
  * @function module:ol.inherits
+ * @deprecated
  * @api
  */
 export function inherits(childCtor, parentCtor) {