{
    "version": "1.5.2",
    "homepage": "http://golang.org",
    "license": "http://golang.org/LICENSE",
    "architecture": {
        "64bit": {
            "url": "https://storage.googleapis.com/golang/go1.5.2.windows-amd64.zip",
            "hash": "sha1:5eb85b0eec36cfef05700935f2420b6104986733"
        },
        "32bit": {
            "url": "https://storage.googleapis.com/golang/go1.5.2.windows-386.zip",
            "hash": "sha1:a9b265268a4632ad6f7ca8769e6a34eb1522f784"
        }
    },
    "extract_dir": "go",
    "env_add_path": "bin",
    "env_set": {
        "GOROOT": "$dir"
    },
    "checkver": "<div id=\"footer\">\\s*Build version go([0-9\\.]+)\\.<br>"
}

{
    "version": "1.5.3",
    "homepage": "http://golang.org",
    "license": "http://golang.org/LICENSE",
    "architecture": {
        "64bit": {
            "url": "https://storage.googleapis.com/golang/go1.5.3.windows-amd64.zip",
            "hash": "0a863ba10560c51fa6c4d4ad1180abbc3220b7ecd41159160c322f0b19e06460"
        },
        "32bit": {
            "url": "https://storage.googleapis.com/golang/go1.5.3.windows-386.zip",
            "hash": "f35cefa3f834611611249bc6607df804b0bb81ce06e444078e1fa00a1d811e06"
        }
    },
    "extract_dir": "go",
    "env_add_path": "bin",
    "env_set": {
        "GOROOT": "$dir"
    },
    "checkver": "<div id=\"footer\">\\s*Build version go([0-9\\.]+)\\.<br>"
}

Update Go to version 1.5.3
Update Go to version 1.5.3