diff --git a/package-lock.json b/package-lock.json
index 0baefb8..62ec9d6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@mx-js/mixins",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 8902efc..2d9bb25 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mx-js/mixins",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "description": "Mixins infrastructure for JavaScript",
   "main": "src/index.js",
   "files": [