diff --git a/.github/ISSUE_TEMPLATE.md b/.github/ISSUE_TEMPLATE.md
index 2fe5308..860c842 100644
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -39,5 +39,5 @@ $ composer show --latest 'symfony-cmf/*'
     If it's an error message or piece of code, use code block tags,
     and make sure you provide the whole stack trace(s),
     not just the first error message you can see.
-    More details here: https://github.com/symfony-cmf/Routing/blob/master/CONTRIBUTING.md#issues
+    More details here: https://github.com/symfony-cmf/Routing/blob/3.x/CONTRIBUTING.md#issues
 -->
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 0d8f7f7..297c24a 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -1,6 +1,6 @@
 | Q             | A
 | ------------- | ---
-| Branch?       | "master" for new features / the branch of the current release for fixes
+| Branch?       | default branch for new features / the branch of the current release for fixes
 | Bug fix?      | yes/no
 | New feature?  | yes/no
 | BC breaks?    | yes/no
diff --git a/.github/workflows/test-application.yaml b/.github/workflows/test-application.yaml
index fd4c9b8..eaa96de 100644
--- a/.github/workflows/test-application.yaml
+++ b/.github/workflows/test-application.yaml
@@ -4,7 +4,6 @@ on:
     pull_request:
     push:
         branches:
-            - "master"
             - "[0-9]+.x"
             - "[0-9]+.[0-9]+"
             - "[0-9]+.[0-9]+.x"
@@ -15,6 +14,7 @@ jobs:
         runs-on: "ubuntu-20.04"
         env:
             SYMFONY_DEPRECATIONS_HELPER: weak
+            SYMFONY_REQUIRE: ${{ matrix.symfony-version }}
 
         strategy:
             fail-fast: false
@@ -27,11 +27,13 @@ jobs:
                       symfony-version: "6"
 
                     - php-version: "8.1"
-                      symfony-version: "6"
+                    - php-version: "8.2"
+                    - php-version: "8.3"
+                      symfony-version: "7"
 
         steps:
             - name: "Checkout project"
-              uses: "actions/checkout@v2"
+              uses: "actions/checkout@v3"
 
             - name: "Install and configure PHP"
               uses: "shivammathur/setup-php@v2"
@@ -40,12 +42,14 @@ jobs:
                   extensions: "pdo, pdo_sqlite"
                   tools: "composer:v2"
 
-            - name: "Require Specific Symfony Version"
+            - name: "Flex"
               if: "${{ matrix.symfony-version }}"
-              run: composer require --no-update symfony/flex && composer config extra.symfony.require ${{ matrix.symfony-version}}
+              run: |
+                composer global require --no-progress --no-scripts --no-plugins symfony/flex
+                composer global config --no-plugins allow-plugins.symfony/flex true
 
             - name: "Install dependencies with Composer"
-              uses: "ramsey/composer-install@v1"
+              uses: "ramsey/composer-install@v2"
               with:
                   dependency-versions: "${{ matrix.dependencies }}"
                   composer-options: "--prefer-dist"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 56ea42b..b532a2e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 Changelog
 =========
 
+3.0.2
+-----
+
+* Allow installation with Symfony 7.
+
 3.0.1
 -----
 
diff --git a/composer.json b/composer.json
index 3a3edac..6841d24 100644
--- a/composer.json
+++ b/composer.json
@@ -16,16 +16,15 @@
     ],
     "require": {
         "php": "^8.0",
-        "symfony/routing": "^6.0",
-        "symfony/http-kernel": "^6.0",
+        "symfony/routing": "^6.0 || ^7.0",
+        "symfony/http-kernel": "^6.0 || ^7.0",
         "psr/log": "^1.0 || ^2.0 || ^3.0"
     },
     "require-dev": {
-        "doctrine/annotations": "^1.5",
-        "symfony/phpunit-bridge": "^6.0",
-        "symfony/dependency-injection": "^6.0",
-        "symfony/config": "^6.0",
-        "symfony/event-dispatcher": "^6.0"
+        "symfony/phpunit-bridge": "^7.0.3",
+        "symfony/dependency-injection": "^6.0 || ^7.0",
+        "symfony/config": "^6.0 || ^7.0",
+        "symfony/event-dispatcher": "^6.0 || ^7.0"
     },
     "suggest": {
         "symfony/event-dispatcher": "DynamicRouter can optionally trigger an event at the start of matching. Minimal version ^6.0"
diff --git a/src/ChainRouter.php b/src/ChainRouter.php
index 23dc1ca..6c39c97 100644
--- a/src/ChainRouter.php
+++ b/src/ChainRouter.php
@@ -279,11 +279,11 @@ public function setContext(RequestContext $context): void
         $this->context = $context;
     }
 
-    public function warmUp(string $cacheDir): array
+    public function warmUp(string $cacheDir, ?string $buildDir = null): array
     {
         foreach ($this->all() as $router) {
             if ($router instanceof WarmableInterface) {
-                $router->warmUp($cacheDir);
+                $router->warmUp($cacheDir, $buildDir);
             }
         }
 
diff --git a/src/DynamicRouter.php b/src/DynamicRouter.php
index 86e46e2..63cbabd 100644
--- a/src/DynamicRouter.php
+++ b/src/DynamicRouter.php
@@ -73,7 +73,7 @@ public function __construct(
     /**
      * {@inheritdoc}
      */
-    public function getRouteCollection(): ?RouteCollection
+    public function getRouteCollection(): RouteCollection
     {
         if (!$this->routeCollection instanceof RouteCollection) {
             $this->routeCollection = $this->provider