diff --git a/build/proton.min.js b/build/proton.min.js
index c26c0cf..2d41984 100755
--- a/build/proton.min.js
+++ b/build/proton.min.js
@@ -1,5 +1,5 @@
 /*!
-* Proton v5.1.1
+* Proton v5.1.5
 * https://github.com/drawcall/Proton
 *
 * Copyright 2013-2021, drawcall
diff --git a/package.json b/package.json
index ed43caf..7f1b145 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "proton-engine",
-  "version": "5.1.3",
+  "version": "5.1.5",
   "description": "Proton is a simple and powerful javascript particle animation engine.",
   "keywords": [
     "particle",