diff --git a/packages/admin/src/Commands/Concerns/CanValidateInput.php b/packages/admin/src/Commands/Concerns/CanValidateInput.php
index d7e9dba73e..2bc0ddf7c4 100644
--- a/packages/admin/src/Commands/Concerns/CanValidateInput.php
+++ b/packages/admin/src/Commands/Concerns/CanValidateInput.php
@@ -2,6 +2,7 @@
 
 namespace Filament\Commands\Concerns;
 
+use Closure;
 use Illuminate\Support\Facades\Validator;
 
 trait CanValidateInput
@@ -11,7 +12,7 @@ trait CanValidateInput
         return $this->validateInput(fn () => $this->ask($question), $field, ['required']);
     }
 
-    protected function validateInput(callable $callback, string $field, array $rules): string
+    protected function validateInput(Closure $callback, string $field, array $rules): string
     {
         $input = $callback();
 
diff --git a/packages/admin/src/Facades/Filament.php b/packages/admin/src/Facades/Filament.php
index 7c4b1aad0b..55e0a7da14 100644
--- a/packages/admin/src/Facades/Filament.php
+++ b/packages/admin/src/Facades/Filament.php
@@ -2,6 +2,7 @@
 
 namespace Filament\Facades;
 
+use Closure;
 use Illuminate\Contracts\Auth\Authenticatable;
 use Illuminate\Contracts\Auth\StatefulGuard;
 use Illuminate\Support\Facades\Facade;
@@ -30,7 +31,7 @@ use Illuminate\Support\Facades\Facade;
  * @method static void registerStyles(array $styles)
  * @method static void registerTheme(string $url)
  * @method static void registerWidgets(array $widgets)
- * @method static void serving(callable $widgets)
+ * @method static void serving(Closure $callback)
  *
  * @see \Filament\FilamentManager
  */
diff --git a/packages/admin/src/FilamentManager.php b/packages/admin/src/FilamentManager.php
index 0536a892a5..528c14a981 100644
--- a/packages/admin/src/FilamentManager.php
+++ b/packages/admin/src/FilamentManager.php
@@ -2,6 +2,7 @@
 
 namespace Filament;
 
+use Closure;
 use Filament\Events\ServingFilament;
 use Filament\Models\Contracts\HasAvatar;
 use Filament\Models\Contracts\HasName;
@@ -95,7 +96,7 @@ class FilamentManager
         $this->widgets = array_merge($this->widgets, $widgets);
     }
 
-    public function serving(callable $callback): void
+    public function serving(Closure $callback): void
     {
         Event::listen(ServingFilament::class, $callback);
     }
diff --git a/packages/admin/src/Pages/Actions/Concerns/CanOpenUrl.php b/packages/admin/src/Pages/Actions/Concerns/CanOpenUrl.php
index ce3db98c27..fa097f3e1e 100644
--- a/packages/admin/src/Pages/Actions/Concerns/CanOpenUrl.php
+++ b/packages/admin/src/Pages/Actions/Concerns/CanOpenUrl.php
@@ -2,11 +2,13 @@
 
 namespace Filament\Pages\Actions\Concerns;
 
+use Closure;
+
 trait CanOpenUrl
 {
     protected bool $shouldOpenUrlInNewTab = false;
 
-    protected $url = null;
+    protected string | Closure | null $url = null;
 
     public function openUrlInNewTab(bool $condition = true): static
     {
@@ -15,7 +17,7 @@ trait CanOpenUrl
         return $this;
     }
 
-    public function url(string | callable | null $url, bool $shouldOpenInNewTab = false): static
+    public function url(string | Closure | null $url, bool $shouldOpenInNewTab = false): static
     {
         $this->shouldOpenUrlInNewTab = $shouldOpenInNewTab;
         $this->url = $url;