diff --git a/Gopkg.lock b/Gopkg.lock
index 5b825080c..64e06ab2c 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -197,7 +197,7 @@
   branch = "master"
   name = "golang.org/x/sync"
   packages = ["errgroup"]
-  revision = "fd80eb99c8f653c847d294a001bdf2a3a6f768f5"
+  revision = "1d60e4601c6fd243af51cc01ddf169918a5407ca"
 
 [[projects]]
   branch = "master"
diff --git a/vendor/golang.org/x/sync/CONTRIBUTING.md b/vendor/golang.org/x/sync/CONTRIBUTING.md
index 88dff59bc..d0485e887 100644
--- a/vendor/golang.org/x/sync/CONTRIBUTING.md
+++ b/vendor/golang.org/x/sync/CONTRIBUTING.md
@@ -4,16 +4,15 @@ Go is an open source project.
 
 It is the work of hundreds of contributors. We appreciate your help!
 
-
 ## Filing issues
 
 When [filing an issue](https://golang.org/issue/new), make sure to answer these five questions:
 
-1. What version of Go are you using (`go version`)?
-2. What operating system and processor architecture are you using?
-3. What did you do?
-4. What did you expect to see?
-5. What did you see instead?
+1.  What version of Go are you using (`go version`)?
+2.  What operating system and processor architecture are you using?
+3.  What did you do?
+4.  What did you expect to see?
+5.  What did you see instead?
 
 General questions should go to the [golang-nuts mailing list](https://groups.google.com/group/golang-nuts) instead of the issue tracker.
 The gophers there will answer or ask you to file an issue if you've tripped over a bug.
@@ -23,9 +22,5 @@ The gophers there will answer or ask you to file an issue if you've tripped over
 Please read the [Contribution Guidelines](https://golang.org/doc/contribute.html)
 before sending patches.
 
-**We do not accept GitHub pull requests**
-(we use [Gerrit](https://code.google.com/p/gerrit/) instead for code review).
-
 Unless otherwise noted, the Go source files are distributed under
 the BSD-style license found in the LICENSE file.
-