diff --git a/composer.json b/composer.json
index a7083bcdb..ec21b056f 100644
--- a/composer.json
+++ b/composer.json
@@ -36,13 +36,13 @@
         "psr/http-message": "^1.0|^2.0",
         "psr/log": "^3.0.0",
         "rector/rector": "2.3.8",
-        "symfony/cache": "^7.3",
-        "symfony/filesystem": "^7.3",
-        "symfony/mailer": "^7.2.6",
-        "symfony/process": "^7.3",
-        "symfony/uid": "^7.1",
-        "symfony/var-dumper": "^7.1",
-        "symfony/var-exporter": "^7.1",
+        "symfony/cache": "^7.3|^8.0",
+        "symfony/filesystem": "^7.3|^8.0",
+        "symfony/mailer": "^7.2.6|^8.0",
+        "symfony/process": "^7.3|^8.0",
+        "symfony/uid": "^7.1|^8.0",
+        "symfony/var-dumper": "^7.1|^8.0",
+        "symfony/var-exporter": "^7.1|^8.0",
         "symfony/yaml": "^7.3|^8.0",
         "tempest/highlight": "^2.11.4",
         "vlucas/phpdotenv": "^5.6.1",
@@ -85,8 +85,8 @@
         "spatie/phpunit-snapshot-assertions": "^5.1.8",
         "spaze/phpstan-disallowed-calls": "^4.0",
         "stevenmaguire/oauth2-microsoft": "^2.2",
-        "symfony/amazon-mailer": "^7.2.0",
-        "symfony/postmark-mailer": "^7.2.6",
+        "symfony/amazon-mailer": "^7.2.0|^8.0",
+        "symfony/postmark-mailer": "^7.2.6|^8.0",
         "symplify/monorepo-builder": "^11.2",
         "tempest/blade": "dev-main",
         "thenetworg/oauth2-azure": "^2.2",
diff --git a/packages/cache/composer.json b/packages/cache/composer.json
index 3accc8657..b09bb78e1 100644
--- a/packages/cache/composer.json
+++ b/packages/cache/composer.json
@@ -4,7 +4,7 @@
     "require": {
         "php": "^8.5",
         "psr/cache": "^3.0",
-        "symfony/cache": "^7.3",
+        "symfony/cache": "^7.3|^8.0",
         "tempest/core": "3.x-dev",
         "tempest/clock": "3.x-dev",
         "tempest/kv-store": "3.x-dev",
diff --git a/packages/console/composer.json b/packages/console/composer.json
index 21f4d7366..66e789486 100644
--- a/packages/console/composer.json
+++ b/packages/console/composer.json
@@ -5,7 +5,7 @@
     "minimum-stability": "dev",
     "require": {
         "php": "^8.5",
-        "symfony/filesystem": "^7.3",
+        "symfony/filesystem": "^7.3|^8.0",
         "tempest/core": "3.x-dev",
         "tempest/container": "3.x-dev",
         "tempest/generation": "3.x-dev",
diff --git a/packages/core/composer.json b/packages/core/composer.json
index c30c168dd..63db9d375 100644
--- a/packages/core/composer.json
+++ b/packages/core/composer.json
@@ -10,7 +10,7 @@
         "tempest/reflection": "3.x-dev",
         "tempest/support": "3.x-dev",
         "vlucas/phpdotenv": "^5.6.1",
-        "symfony/cache": "^7.3",
+        "symfony/cache": "^7.3|^8.0",
         "filp/whoops": "^2.15"
     },
     "require-dev": {
diff --git a/packages/debug/composer.json b/packages/debug/composer.json
index 7f8fa9b5d..df1cf9685 100644
--- a/packages/debug/composer.json
+++ b/packages/debug/composer.json
@@ -6,7 +6,7 @@
     "require": {
         "php": "^8.5",
         "tempest/highlight": "^2.11.4",
-        "symfony/var-dumper": "^7.1"
+        "symfony/var-dumper": "^7.1|^8.0"
     },
     "require-dev": {
         "tempest/console": "3.x-dev"
diff --git a/packages/discovery/composer.json b/packages/discovery/composer.json
index b1232690a..35b8f927c 100644
--- a/packages/discovery/composer.json
+++ b/packages/discovery/composer.json
@@ -8,7 +8,7 @@
         "tempest/reflection": "3.x-dev",
         "tempest/support": "3.x-dev",
         "psr/container": "^2.0",
-        "symfony/cache": "^7.3"
+        "symfony/cache": "^7.3|^8.0"
     },
     "require-dev": {
         "tempest/container": "3.x-dev",
diff --git a/packages/http/composer.json b/packages/http/composer.json
index f24005650..aa1367bc8 100644
--- a/packages/http/composer.json
+++ b/packages/http/composer.json
@@ -14,7 +14,7 @@
         "laminas/laminas-diactoros": "^3.3",
         "psr/http-factory": "^1.0",
         "psr/http-message": "^1.0|^2.0",
-        "symfony/uid": "^7.1"
+        "symfony/uid": "^7.1|^8.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/packages/icon/composer.json b/packages/icon/composer.json
index 9d5cddcad..d9fbb60d6 100644
--- a/packages/icon/composer.json
+++ b/packages/icon/composer.json
@@ -8,7 +8,7 @@
         "tempest/container": "3.x-dev",
         "tempest/http-client": "3.x-dev",
         "tempest/support": "3.x-dev",
-        "symfony/cache": "^7.3"
+        "symfony/cache": "^7.3|^8.0"
     },
     "suggest": {
         "tempest/event-bus": "For events support"
diff --git a/packages/intl/src/MessageFormat/Functions/NumberFunction.php b/packages/intl/src/MessageFormat/Functions/NumberFunction.php
index 67cb7a7e3..2df444d78 100644
--- a/packages/intl/src/MessageFormat/Functions/NumberFunction.php
+++ b/packages/intl/src/MessageFormat/Functions/NumberFunction.php
@@ -2,6 +2,7 @@
 
 namespace Tempest\Intl\MessageFormat\Functions;
 
+use MessageFormatter;
 use Tempest\Intl\Currency;
 use Tempest\Intl\IntlConfig;
 use Tempest\Intl\MessageFormat\Formatter\FormattedValue;
@@ -50,7 +51,7 @@ private function getOrdinalCategory(float|int $number): string
     {
         $cacheKey = "{$this->intlConfig->currentLocale->value}:{$number}";
 
-        return $this->ordinalCategories[$cacheKey] ??= \MessageFormatter::formatMessage(
+        return $this->ordinalCategories[$cacheKey] ??= MessageFormatter::formatMessage(
             $this->intlConfig->currentLocale->value,
             '{number, selectordinal, zero {zero} one {one} two {two} few {few} many {many} other {other}}',
             ['number' => $number],
diff --git a/packages/mail/composer.json b/packages/mail/composer.json
index 2ba5c844f..96ec57a23 100644
--- a/packages/mail/composer.json
+++ b/packages/mail/composer.json
@@ -8,11 +8,11 @@
         "tempest/reflection": "3.x-dev",
         "tempest/support": "3.x-dev",
         "tempest/event-bus": "3.x-dev",
-        "symfony/mailer": "^7.2.6"
+        "symfony/mailer": "^7.2.6|^8.0"
     },
     "require-dev": {
-        "symfony/postmark-mailer": "^7.2.6",
-        "symfony/amazon-mailer": "^7.2.0"
+        "symfony/postmark-mailer": "^7.2.6|^8.0",
+        "symfony/amazon-mailer": "^7.2.0|^8.0"
     },
     "suggest": {
         "tempest/storage": "For storage attachment support"
diff --git a/packages/process/composer.json b/packages/process/composer.json
index 119dc5328..70e199197 100644
--- a/packages/process/composer.json
+++ b/packages/process/composer.json
@@ -5,7 +5,7 @@
     "minimum-stability": "dev",
     "require": {
         "php": "^8.5",
-        "symfony/process": "^7.3",
+        "symfony/process": "^7.3|^8.0",
         "tempest/container": "3.x-dev",
         "tempest/support": "3.x-dev",
         "tempest/datetime": "3.x-dev"
diff --git a/packages/router/composer.json b/packages/router/composer.json
index a7afe785f..8a176a5a8 100644
--- a/packages/router/composer.json
+++ b/packages/router/composer.json
@@ -8,7 +8,7 @@
         "tempest/http": "3.x-dev",
         "tempest/view": "3.x-dev",
         "tempest/highlight": "^2.11.4",
-        "symfony/var-exporter": "^7.1"
+        "symfony/var-exporter": "^7.1|^8.0"
     },
     "autoload": {
         "files": [
diff --git a/packages/router/src/RouteBindingInitializer.php b/packages/router/src/RouteBindingInitializer.php
index a7c851827..a5249843f 100644
--- a/packages/router/src/RouteBindingInitializer.php
+++ b/packages/router/src/RouteBindingInitializer.php
@@ -7,6 +7,7 @@
 use Tempest\Container\Container;
 use Tempest\Container\DynamicInitializer;
 use Tempest\Reflection\ClassReflector;
+use Tempest\Reflection\ParameterReflector;
 use Tempest\Router\Exceptions\RouteBindingDidNotSupportRelations;
 use Tempest\Router\Exceptions\RouteBindingFailed;
 use UnitEnum;
@@ -43,7 +44,7 @@ public function initialize(ClassReflector $class, string|UnitEnum|null $tag, Con
         if ($withRelations !== null) {
             $resolve = $class->getMethod('resolve');
 
-            if ($resolve->getParameter('relations') === null && ! $resolve->getReflection()->isVariadic()) {
+            if (! $resolve->getParameter('relations') instanceof ParameterReflector && ! $resolve->getReflection()->isVariadic()) {
                 throw new RouteBindingDidNotSupportRelations($class->getName());
             }
         }
diff --git a/packages/support/composer.json b/packages/support/composer.json
index c2b69a31b..567400c7e 100644
--- a/packages/support/composer.json
+++ b/packages/support/composer.json
@@ -6,7 +6,7 @@
     "require": {
         "php": "^8.5",
         "voku/portable-ascii": "^2.0.3",
-        "symfony/uid": "^7.1"
+        "symfony/uid": "^7.1|^8.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/packages/view/composer.json b/packages/view/composer.json
index 36cd3b0c9..ee1c114a3 100644
--- a/packages/view/composer.json
+++ b/packages/view/composer.json
@@ -10,7 +10,7 @@
         "tempest/validation": "3.x-dev",
         "tempest/clock": "3.x-dev",
         "league/commonmark": "^2.7",
-        "symfony/cache": "^7.3"
+        "symfony/cache": "^7.3|^8.0"
     },
     "autoload": {
         "files": [