magento2.2.6 – Upgrade from 2.2.6 to 2.2.7

I just do not understand that damn mistake and it drives me crazy.

Problem 1
– The requested package magento / product-enterprise-edition 2.2.7 exists in the form magento / product-enterprise-edition[2.2.6] but these are rejected by your constraint.

All I'm trying to do is go from 2.2.6 to 2.2.7

This is my composer.json file and when I opened it for the first time, it indicated version 2.2.5 and the requirement was magento / product-enterprise-edition ":" 2.2.6 ",

{
"name": "magento / project-enterprise-edition",
"description": "Electronic Commerce Platform for Growth (Enterprise Edition)",
"type": "project",
"version": "2.2.7",
"Licence": [
        "proprietary"
    ],
"need": {
"magento / product-enterprise-edition": "2.2.7",
"composer / composer": "@alpha",
"magemojo / m2-ce-cron": "^ 1.2",
"gene / bluefoot": "^ 1.0",
"mageworx / module-advancedproductoptions": "2.15.0",
"amasty / shopby": "^ 2.10",
"amasty / feed": "^ 2.2",
"amasty / smtp": "^ 1.1",
"mageworx / module-downloads": "^ 2.5",
"mageworx / module-seosuiteultimate": "^ 2.21",
"mageworx / module-shippingrules": "^ 2.5",
"mageworx / module-geoip": "^ 2.1",
"amasty / module-page-speed-optimizer": "^ 1.0",
"amasty / module-elastic-search": "^ 1.4"
}
"replace": {
"amzn / amazon-pay-sdk-php": "*",
"amzn / amazon-pay-and-login-with-amazon-core-module": "*",
"amzn / login-with-amazon-module": "*",
"amzn / amazon-pay-module": "*"
}
"require-dev": {
"phpunit / phpunit": "~ 6.2.0",
"squizlabs / php_codesniffer": "3.2.2",
"phpmd / phpmd": "@stable",
"pdepend / pdepend": "2.5.2",
"friendsofphp / php-cs-fix": "~ 2.2.1",
"lusitanian / oauth": "~ 0.8.10",
"sebastian / phpcpd": "2.0.4"
}
"autoload": {
"psr-4": {
"Magento \ Framework \": "lib / internal / Magento / Framework /",
"Magento \ Setup \": "setup / src / Magento / Setup /",
"Magento \": "app / code / Magento /"
}
"psr-0": {
"": [
                "app/code/"
            ]
        }
"files": [
            "app/etc/NonComposerComponentRegistration.php"
        ],
"Exclude-from-classmap": [
            "**/dev/**",
            "**/update/**",
            "**/Test/**"
        ]
    }
"autoload-dev": {
"psr-4": {
"Magento \ Sniffs \": "dev / tests / static / framework / Magento / Sniffs /",
"Magento  Tools \": "dev / tools / Magento / Tools /",
"Magento \ Tools \ Sanity \": "dev / build / publish / sanity / Magento / Tools / Sanity /",
"Magento  TestFramework \ Inspection \": "dev / tests / static / framework / Magento / TestFramework / Inspection /",
"Magento  TestFramework \ Utility \": "dev / tests / static / framework / Magento / TestFramework / Utility /",
"Magento \ ToolkitFramework \": "dev / tools / performance-toolkit / framework / Magento / ToolkitFramework /"
}
}
"minimum stability": "stable",
"repositories": {
"0": {
"type": "composer",
"url": "https://repo.magento.com/"
}
"mageworx_packages": {
"type": "composer",
"url": "https://packages.mageworx.com/"
}
"amasty": {
"type": "composer",
"url": "https://composer.amasty.com/enterprise/"
}
"xtento": {
"type": "composer",
"url": "https://repo.xtento.com"
}
"mirasvit-ssu2": {
"type": "composer",
"url": "https: // 34628: AB94VE15JD@packages.mirasvit.com/"
}
"firebear": {
"type": "composer",
"url": "https://firebearstudio.com/composer/download/packing/type/ee/user/c039b63f7e733ff958729ef4803c06b0/password/ded1d044e9cf2c78c3be7c7f7c37f37c37fce977/"
}
}
"extra": {
"magento-force": "override"
}
}