diff --git a/flight/commands/AiGenerateInstructionsCommand.php b/flight/commands/AiGenerateInstructionsCommand.php
index cb78e9a..5190c3c 100644
--- a/flight/commands/AiGenerateInstructionsCommand.php
+++ b/flight/commands/AiGenerateInstructionsCommand.php
@@ -33,7 +33,7 @@ class AiGenerateInstructionsCommand extends AbstractBaseCommand
      *
      * @return int
      */
-    public function execute()
+    public function execute(): int
     {
         $io = $this->app()->io();
 
diff --git a/flight/commands/AiInitCommand.php b/flight/commands/AiInitCommand.php
index f24332d..92b468d 100644
--- a/flight/commands/AiInitCommand.php
+++ b/flight/commands/AiInitCommand.php
@@ -27,7 +27,7 @@ class AiInitCommand extends AbstractBaseCommand
      *
      * @return int
      */
-    public function execute()
+    public function execute(): int
     {
         $io = $this->app()->io();
 
diff --git a/flight/commands/ControllerCommand.php b/flight/commands/ControllerCommand.php
index a7c10bc..e61dada 100644
--- a/flight/commands/ControllerCommand.php
+++ b/flight/commands/ControllerCommand.php
@@ -26,7 +26,7 @@ class ControllerCommand extends AbstractBaseCommand
      *
      * @return void
      */
-    public function execute(string $controller)
+    public function execute(string $controller): void
     {
         $io = $this->app()->io();
 
diff --git a/flight/commands/RouteCommand.php b/flight/commands/RouteCommand.php
index d742708..1667934 100644
--- a/flight/commands/RouteCommand.php
+++ b/flight/commands/RouteCommand.php
@@ -37,7 +37,7 @@ class RouteCommand extends AbstractBaseCommand
      *
      * @return void
      */
-    public function execute()
+    public function execute(): void
     {
         $io = $this->app()->io();
 
diff --git a/flight/net/Request.php b/flight/net/Request.php
index 6e9aa93..31ff1b9 100644
--- a/flight/net/Request.php
+++ b/flight/net/Request.php
@@ -375,7 +375,7 @@ class Request
      *
      * @return string
      */
-    public static function header(string $header, $default = '')
+    public static function header(string $header, $default = ''): string
     {
         return self::getHeader($header, $default);
     }