diff --git a/sp.js b/sp.js
index 23de522..937fef4 100644
--- a/sp.js
+++ b/sp.js
@@ -1,7 +1,7 @@
 /*! * Snowplow - The world's most powerful web analytics platform
  *
  * @description JavaScript tracker for Snowplow
- * @version     2.4.1-m3
+ * @version     2.4.1-m4
  * @author      Alex Dean, Simon Andersson, Anthon Pang, Fred Blundun
  * @copyright   Anthon Pang, Snowplow Analytics Ltd
  * @license     Simplified BSD
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