From 1cc588c2da932163820d8993842f72e2c970fd2a Mon Sep 17 00:00:00 2001
From: Konstantin Pogorelov <or@pluseq.com>
Date: Wed, 31 May 2017 16:32:45 +0200
Subject: [PATCH] stop supporting node v4 and v5

---
 .travis.yml  | 2 --
 README.md    | 1 +
 package.json | 3 +++
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 3a9c633..0ec00be 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,3 @@
 language: node_js
 node_js:
     - "6"
-    - "5"
-    - "4"
diff --git a/README.md b/README.md
index 6667e51..17d5729 100644
--- a/README.md
+++ b/README.md
@@ -160,6 +160,7 @@ Here is meddleware config sample, which can be used in a standard **kraken.js**
  * **3.0.0**
     * upgrade dependencies, most notably **prom-client** to 9.0.0
     * switch to koa v2 in koa unittest
+    * only node v6 is supported (stop supporting node v4 and v5)
  * **2.1.0**
     * deprecate **excludeRoutes**, use **req.originalUrl** instead of **req.path**
  * **2.0.0**
diff --git a/package.json b/package.json
index f8ff073..9080544 100644
--- a/package.json
+++ b/package.json
@@ -34,5 +34,8 @@
   "repository": {
     "type": "git",
     "url": "https://github.com/jochen-schweizer/express-prom-bundle.git"
+  },
+  "engines": {
+    "node": ">=6.0.0"
   }
 }