diff --git a/package-lock.json b/package-lock.json
index 0725ac54..8af38003 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "worker-factory",
-  "version": "2.4.19",
+  "version": "2.4.20",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 8f8ff121..6fead25a 100644
--- a/package.json
+++ b/package.json
@@ -84,5 +84,5 @@
     "test": "grunt lint && grunt test"
   },
   "types": "build/es2015/module.d.ts",
-  "version": "2.4.19"
+  "version": "2.4.20"
 }