diff --git a/README.md b/README.md
index c932e7a..378470b 100644
--- a/README.md
+++ b/README.md
@@ -167,6 +167,8 @@ Here is meddleware config sample, which can be used in a standard **kraken.js**
 
 ## Changelog
 
+ * **3.1.0**
+    * upgrade **prom-client** to 10.0.0
  * **3.0.0**
     * upgrade dependencies, most notably **prom-client** to 9.0.0
     * switch to koa v2 in koa unittest
diff --git a/package.json b/package.json
index 8477f70..ed14019 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "express-prom-bundle",
-  "version": "3.0.1",
+  "version": "3.1.0",
   "description": "express middleware with popular prometheus metrics in one bundle",
   "main": "src/index.js",
   "keywords": [
@@ -17,7 +17,7 @@
   "license": "MIT",
   "dependencies": {
     "on-finished": "^2.3.0",
-    "prom-client": "^10.0.0",
+    "prom-client": "^10.0.2",
     "url-value-parser": "^1.0.0"
   },
   "devDependencies": {