This page summarizes the changes between official stable releases of Go. The change log has the full details.

To update to a specific release, use:

    git pull
    git checkout release-branch

## Release Policy

Each major Go release obsoletes and ends support for the previous one. For example, if Go 1.5 has been released, then it is the current release and Go 1.4 and earlier are no longer supported. We fix critical problems in the current release as needed by issuing minor revisions (for example, Go 1.5.1, Go 1.5.2, and so on).

As a special case, we issue minor revisions for critical security problems in both the current release and the previous release. For example, if Go 1.5 is the current release then we will issue minor revisions to fix critical security problems in both Go 1.4 and Go 1.5 as they arise. See the security policy for more details.

## go1.7 (released 2016/08/15)

Go 1.7 is a major release of Go. Read the Go 1.7 Release Notes for more information.

### Minor revisions

go1.7.1 (released 2016/09/07) includes fixes to the compiler, runtime, documentation, and the `compress/flate`, `hash/crc32`, `io`, `net`, `net/http`, `path/filepath`, `reflect`, and `syscall` packages. See the Go 1.7.1 milestone on our issue tracker for details.

go1.7.2 should not be used. It was tagged but not fully released. The release was deferred due to a last minute bug report. Use go1.7.3 instead, and refer to the summary of changes below.

go1.7.3 (released 2016/10/19) includes fixes to the compiler, runtime, and the `crypto/cipher`, `crypto/tls`, `net/http`, and `strings` packages. See the Go 1.7.3 milestone on our issue tracker for details.

go1.7.4 (released 2016/12/01) includes two security fixes. See the Go 1.7.4 milestone on our issue tracker for details.

go1.7.5 (released 2017/01/26) includes fixes to the compiler, runtime, and the `crypto/x509` and `time` packages. See the Go 1.7.5 milestone on our issue tracker for details.

## go1.6 (released 2016/02/17)

Go 1.6 is a major release of Go. Read the Go 1.6 Release Notes for more information.

### Minor revisions

go1.6.1 (released 2016/04/12) includes two security fixes. See the Go 1.6.1 milestone on our issue tracker for details.

go1.6.2 (released 2016/04/20) includes fixes to the compiler, runtime, tools, documentation, and the `mime/multipart`, `net/http`, and `sort` packages. See the Go 1.6.2 milestone on our issue tracker for details.

go1.6.3 (released 2016/07/17) includes security fixes to the `net/http/cgi` package and `net/http` package when used in a CGI environment. See the Go 1.6.3 milestone on our issue tracker for details.

go1.6.4 (released 2016/12/01) includes two security fixes. It contains the same fixes as Go 1.7.4 and was released at the same time. See the Go 1.7.4 milestone on our issue tracker for details.

## go1.5 (released 2015/08/19)

Go 1.5 is a major release of Go. Read the Go 1.5 Release Notes for more information.

### Minor revisions

go1.5.1 (released 2015/09/08) includes bug fixes to the compiler, assembler, and the `fmt`, `net/textproto`, `net/http`, and `runtime` packages. See the Go 1.5.1 milestone on our issue tracker for details.

go1.5.2 (released 2015/12/02) includes bug fixes to the compiler, linker, and the `mime/multipart`, `net`, and `runtime` packages. See the Go 1.5.2 milestone on our issue tracker for details.

go1.5.3 (released 2016/01/13) includes a security fix to the `math/big` package affecting the `crypto/tls` package. See the release announcement for details.

go1.5.4 (released 2016/04/12) includes two security fixes. It contains the same fixes as Go 1.6.1 and was released at the same time. See the Go 1.6.1 milestone on our issue tracker for details.

## go1.4 (released 2014/12/10)

Go 1.4 is a major release of Go. Read the Go 1.4 Release Notes for more information.

### Minor revisions

go1.4.1 (released 2015/01/15) includes bug fixes to the linker and the `log`, `syscall`, and `runtime` packages. See the Go 1.4.1 milestone on our issue tracker for details.

go1.4.2 (released 2015/02/17) includes bug fixes to the `go` command, the compiler and linker, and the `runtime`, `syscall`, `reflect`, and `math/big` packages. See the Go 1.4.2 milestone on our issue tracker for details.

go1.4.3 (released 2015/09/22) includes security fixes to the `net/http` package and bug fixes to the `runtime` package. See the Go 1.4.3 milestone on our issue tracker for details.

## go1.3 (released 2014/06/18)

Go 1.3 is a major release of Go. Read the Go 1.3 Release Notes for more information.

### Minor revisions

go1.3.1 (released 2014/08/13) includes bug fixes to the compiler and the `runtime`, `net`, and `crypto/rsa` packages. See the change history for details.

go1.3.2 (released 2014/09/25) includes bug fixes to cgo and the crypto/tls packages. See the change history for details.

go1.3.3 (released 2014/09/30) includes further bug fixes to cgo, the runtime package, and the nacl port. See the change history for details.

## go1.2 (released 2013/12/01)

Go 1.2 is a major release of Go. Read the Go 1.2 Release Notes for more information.

### Minor revisions

go1.2.1 (released 2014/03/02) includes bug fixes to the `runtime`, `net`, and `database/sql` packages. See the change history for details.

go1.2.2 (released 2014/05/05) includes a security fix that affects the tour binary included in the binary distributions (thanks to Guillaume T).

## go1.1 (released 2013/05/13)

Go 1.1 is a major release of Go. Read the Go 1.1 Release Notes for more information.

### Minor revisions

go1.1.1 (released 2013/06/13) includes several compiler and runtime bug fixes. See the change history for details.

go1.1.2 (released 2013/08/13) includes fixes to the `gc` compiler and `cgo`, and the `bufio`, `runtime`, `syscall`, and `time` packages. See the change history for details. If you use package syscall's `Getrlimit` and `Setrlimit` functions under Linux on the ARM or 386 architectures, please note change 11803043 that fixes issue 5949.

## go1 (released 2012/03/28)

Go 1 is a major release of Go that will be stable in the long term. Read the Go 1 Release Notes for more information.

It is intended that programs written for Go 1 will continue to compile and run correctly, unchanged, under future versions of Go 1. Read the Go 1 compatibility document for more about the future of Go 1.

The go1 release corresponds to `weekly.2012-03-27`.

### Minor revisions

go1.0.1 (released 2012/04/25) was issued to fix an escape analysis bug that can lead to memory corruption. It also includes several minor code and documentation fixes.

go1.0.2 (released 2012/06/13) was issued to fix two bugs in the implementation of maps using struct or array keys: issue 3695 and issue 3573. It also includes many minor code and documentation fixes.

go1.0.3 (released 2012/09/21) includes minor code and documentation fixes.

See the go1 release branch history for the complete list of changes.

## Older releases

See the Pre-Go 1 Release History page for notes on earlier releases.