From 36f4ab6bce7bb1ae419e4e8a7d9c6b008f0f2fbf Mon Sep 17 00:00:00 2001
From: beorn7 <beorn@soundcloud.com>
Date: Wed, 6 Sep 2017 15:36:30 +0200
Subject: [PATCH] Drop Go1.6 support, add test for Go1.9

Also, document the version requirement.
---
 .travis.yml | 6 +++---
 README.md   | 2 ++
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 85b5115..e9bca4e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,9 +2,9 @@ sudo: false
 language: go
 
 go:
- - 1.6.3
- - 1.7
- - 1.8.1
+ - 1.7.x
+ - 1.8.x
+ - 1.9.x
 
 script:
  - go test -short ./...
diff --git a/README.md b/README.md
index 479290d..0eb0df1 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@ This is the [Go](http://golang.org) client library for
 instrumenting application code, and one for creating clients that talk to the
 Prometheus HTTP API.
 
+__This library requires Go1.7 or later.__
+
 ## Instrumenting applications
 
 [![code-coverage](http://gocover.io/_badge/github.com/prometheus/client_golang/prometheus)](http://gocover.io/github.com/prometheus/client_golang/prometheus) [![go-doc](https://godoc.org/github.com/prometheus/client_golang/prometheus?status.svg)](https://godoc.org/github.com/prometheus/client_golang/prometheus)