diff --git a/package-lock.json b/package-lock.json
index f1f4809..89f743c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "express-prom-bundle",
-  "version": "6.3.6",
+  "version": "6.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 8e7f699..ef0937e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "express-prom-bundle",
-  "version": "6.3.6",
+  "version": "6.4.0",
   "description": "express middleware with popular prometheus metrics in one bundle",
   "main": "src/index.js",
   "keywords": [