2c2
< index 5869f57220..f1d7de57bc 100644
---
> index cc37fe2619..338e28bc92 100644
15c15
< index 4804cb5028..3ad943e828 100644
---
> index 3dc5459a1c..645114adb5 100644
22,23c22,23
< -    "content-hash": "e4ed5776ea9cd61afba30d3deb4934b1",
< +    "content-hash": "c003728d716b649e66bd3ca8ad0bee1e",
---
> -    "content-hash": "966c0ed90c2996cad45b441c58d01aa2",
> +    "content-hash": "bf3f5b1c0d2f35255e03825589a1ee4f",
27,103d26
< @@ -60,28 +60,31 @@
<          },
<          {
<              "name": "composer/installers",
< -            "version": "v1.7.0",
< +            "version": "v1.9.0",
<              "source": {
<                  "type": "git",
<                  "url": "https://github.com/composer/installers.git",
< -                "reference": "141b272484481432cda342727a427dc1e206bfa0"
< +                "reference": "b93bcf0fa1fccb0b7d176b0967d969691cd74cca"
<              },
<              "dist": {
<                  "type": "zip",
< -                "url": "https://api.github.com/repos/composer/installers/zipball/141b272484481432cda342727a427dc1e206bfa0",
< -                "reference": "141b272484481432cda342727a427dc1e206bfa0",
< +                "url": "https://api.github.com/repos/composer/installers/zipball/b93bcf0fa1fccb0b7d176b0967d969691cd74cca",
< +                "reference": "b93bcf0fa1fccb0b7d176b0967d969691cd74cca",
<                  "shasum": ""
<              },
<              "require": {
< -                "composer-plugin-api": "^1.0"
< +                "composer-plugin-api": "^1.0 || ^2.0"
<              },
<              "replace": {
<                  "roundcube/plugin-installer": "*",
<                  "shama/baton": "*"
<              },
<              "require-dev": {
< -                "composer/composer": "1.0.*@dev",
< -                "phpunit/phpunit": "^4.8.36"
< +                "composer/composer": "1.6.* || 2.0.*@dev",
< +                "composer/semver": "1.0.* || 2.0.*@dev",
< +                "phpunit/phpunit": "^4.8.36",
< +                "sebastian/comparator": "^1.2.4",
< +                "symfony/process": "^2.3"
<              },
<              "type": "composer-plugin",
<              "extra": {
< @@ -117,6 +120,7 @@
<                  "Kanboard",
<                  "Lan Management System",
<                  "MODX Evo",
< +                "MantisBT",
<                  "Mautic",
<                  "Maya",
<                  "OXID",
< @@ -171,6 +175,7 @@
<                  "shopware",
<                  "silverstripe",
<                  "sydes",
< +                "sylius",
<                  "symfony",
<                  "typo3",
<                  "wordpress",
< @@ -178,7 +183,7 @@
<                  "zend",
<                  "zikula"
<              ],
< -            "time": "2019-08-12T15:00:31+00:00"
< +            "time": "2020-04-07T06:57:05+00:00"
<          },
<          {
<              "name": "composer/semver",
< diff --git a/composer/Metapackage/CoreRecommended/composer.json b/composer/Metapackage/CoreRecommended/composer.json
< index 7aa00552f3..796d08d473 100644
< --- a/composer/Metapackage/CoreRecommended/composer.json
< +++ b/composer/Metapackage/CoreRecommended/composer.json
< @@ -9,7 +9,7 @@
<      "require": {
<          "drupal/core": "8.9.x-dev",
<          "asm89/stack-cors": "1.2.0",
< -        "composer/installers": "v1.7.0",
< +        "composer/installers": "v1.9.0",
<          "composer/semver": "1.5.0",
<          "doctrine/annotations": "v1.4.0",
<          "doctrine/cache": "v1.6.2",
126a50,61
> diff --git a/composer/Plugin/ProjectMessage/composer.json b/composer/Plugin/ProjectMessage/composer.json
> index 96ade5102c..3741b31600 100644
> --- a/composer/Plugin/ProjectMessage/composer.json
> +++ b/composer/Plugin/ProjectMessage/composer.json
> @@ -15,6 +15,6 @@
>    },
>    "require": {
>      "php": ">=7.3.0",
> -    "composer-plugin-api": "^1.1"
> +    "composer-plugin-api": "^1.1 || ^2"
>    }
>  }
203a139,151
> diff --git a/composer/Plugin/Scaffold/composer.json b/composer/Plugin/Scaffold/composer.json
> index 5cbb4ad79b..ca9d6d7b48 100644
> --- a/composer/Plugin/Scaffold/composer.json
> +++ b/composer/Plugin/Scaffold/composer.json
> @@ -6,7 +6,7 @@
>    "homepage": "https://www.drupal.org/project/drupal",
>    "license": "GPL-2.0-or-later",
>    "require": {
> -    "composer-plugin-api": "^1.0.0",
> +    "composer-plugin-api": "^1 || ^2",
>      "php": ">=7.3.0"
>    },
>    "conflict": {
226a175,212
> diff --git a/composer/Plugin/VendorHardening/composer.json b/composer/Plugin/VendorHardening/composer.json
> index 4ed1adedd0..5f78bc6abd 100644
> --- a/composer/Plugin/VendorHardening/composer.json
> +++ b/composer/Plugin/VendorHardening/composer.json
> @@ -15,6 +15,6 @@
>    },
>    "require": {
>      "php": ">=7.3.0",
> -    "composer-plugin-api": "^1.1"
> +    "composer-plugin-api": "^1.1 || ^2"
>    }
>  }
> diff --git a/composer/Template/LegacyProject/composer.json b/composer/Template/LegacyProject/composer.json
> index c7f532dfe6..9162033006 100644
> --- a/composer/Template/LegacyProject/composer.json
> +++ b/composer/Template/LegacyProject/composer.json
> @@ -15,7 +15,7 @@
>          }
>      ],
>      "require": {
> -        "composer/installers": "^1.2",
> +        "composer/installers": "^1.9",
>          "drupal/core-composer-scaffold": "^9",
>          "drupal/core-project-message": "^9",
>          "drupal/core-recommended": "^9",
> diff --git a/composer/Template/RecommendedProject/composer.json b/composer/Template/RecommendedProject/composer.json
> index 56aa5cdb2c..9de50df252 100644
> --- a/composer/Template/RecommendedProject/composer.json
> +++ b/composer/Template/RecommendedProject/composer.json
> @@ -15,7 +15,7 @@
>          }
>      ],
>      "require": {
> -        "composer/installers": "^1.2",
> +        "composer/installers": "^1.9",
>          "drupal/core-composer-scaffold": "^9",
>          "drupal/core-project-message": "^9",
>          "drupal/core-recommended": "^9"
242c228
< index d6d90504e1..df2f259588 100644
---
> index e9bf830116..641dba464b 100644
245c231
< @@ -104,6 +104,11 @@ public function testVerifyTemplateTestProviderIsAccurate() {
---
> @@ -105,6 +105,11 @@ public function testVerifyTemplateTestProviderIsAccurate() {
258c244
< index f062a6b4f6..e4b5daf335 100644
---
> index 3f6eeedd45..99eb705b28 100644
261c247
< @@ -44,6 +44,10 @@ protected function setUp() {
---
> @@ -44,6 +44,10 @@ protected function setUp(): void {