diff --git a/src/Colors/AbstractColorChannel.php b/src/Colors/AbstractColorChannel.php
index da43f031..b883db2b 100644
--- a/src/Colors/AbstractColorChannel.php
+++ b/src/Colors/AbstractColorChannel.php
@@ -52,7 +52,7 @@ abstract class AbstractColorChannel implements ColorChannelInterface
      *
      * @see ColorChannelInterface::normalize()
      */
-    public function normalize($precision = 32): float
+    public function normalize(int $precision = 32): float
     {
         return round(($this->value() - $this->min()) / ($this->max() - $this->min()), $precision);
     }
diff --git a/src/Colors/Cmyk/Colorspace.php b/src/Colors/Cmyk/Colorspace.php
index e7ab6aec..42a3edd2 100644
--- a/src/Colors/Cmyk/Colorspace.php
+++ b/src/Colors/Cmyk/Colorspace.php
@@ -15,7 +15,7 @@ use Intervention\Image\Interfaces\ColorspaceInterface;
 
 class Colorspace implements ColorspaceInterface
 {
-    public static $channels = [
+    public static array $channels = [
         Channels\Cyan::class,
         Channels\Magenta::class,
         Channels\Yellow::class,
diff --git a/src/Colors/Hsl/Colorspace.php b/src/Colors/Hsl/Colorspace.php
index e2b7d35d..7d333f8a 100644
--- a/src/Colors/Hsl/Colorspace.php
+++ b/src/Colors/Hsl/Colorspace.php
@@ -14,7 +14,7 @@ use Intervention\Image\Interfaces\ColorspaceInterface;
 
 class Colorspace implements ColorspaceInterface
 {
-    public static $channels = [
+    public static array $channels = [
         Channels\Hue::class,
         Channels\Saturation::class,
         Channels\Luminance::class
diff --git a/src/Colors/Hsv/Colorspace.php b/src/Colors/Hsv/Colorspace.php
index ad390275..dd660cf0 100644
--- a/src/Colors/Hsv/Colorspace.php
+++ b/src/Colors/Hsv/Colorspace.php
@@ -14,7 +14,7 @@ use Intervention\Image\Interfaces\ColorspaceInterface;
 
 class Colorspace implements ColorspaceInterface
 {
-    public static $channels = [
+    public static array $channels = [
         Channels\Hue::class,
         Channels\Saturation::class,
         Channels\Value::class
diff --git a/src/Colors/Rgb/Colorspace.php b/src/Colors/Rgb/Colorspace.php
index 3c9b4787..b7e4d4d3 100644
--- a/src/Colors/Rgb/Colorspace.php
+++ b/src/Colors/Rgb/Colorspace.php
@@ -13,7 +13,7 @@ use Intervention\Image\Interfaces\ColorspaceInterface;
 
 class Colorspace implements ColorspaceInterface
 {
-    public static $channels = [
+    public static array $channels = [
         Channels\Red::class,
         Channels\Green::class,
         Channels\Blue::class,
diff --git a/src/Colors/Rgb/Decoders/HtmlColornameDecoder.php b/src/Colors/Rgb/Decoders/HtmlColornameDecoder.php
index 61680ca5..3dc75655 100644
--- a/src/Colors/Rgb/Decoders/HtmlColornameDecoder.php
+++ b/src/Colors/Rgb/Decoders/HtmlColornameDecoder.php
@@ -11,7 +11,7 @@ use Intervention\Image\Interfaces\ImageInterface;
 
 class HtmlColornameDecoder extends HexColorDecoder implements DecoderInterface
 {
-    protected static $names = [
+    protected static array $names = [
         'lightsalmon' => '#ffa07a',
         'salmon' => '#fa8072',
         'darksalmon' => '#e9967a',
diff --git a/src/Drivers/AbstractDecoder.php b/src/Drivers/AbstractDecoder.php
index aea1c1ca..5f5ad47b 100644
--- a/src/Drivers/AbstractDecoder.php
+++ b/src/Drivers/AbstractDecoder.php
@@ -156,10 +156,10 @@ abstract class AbstractDecoder implements DecoderInterface
 
         return new class ($matches, $result)
         {
-            private $matches;
-            private $result;
+            private array $matches;
+            private int|false $result;
 
-            public function __construct($matches, $result)
+            public function __construct(array $matches, int|false $result)
             {
                 $this->matches = $matches;
                 $this->result = $result;
diff --git a/src/Drivers/Imagick/Modifiers/ColorspaceModifier.php b/src/Drivers/Imagick/Modifiers/ColorspaceModifier.php
index 89cc6e7a..9ca66a8b 100644
--- a/src/Drivers/Imagick/Modifiers/ColorspaceModifier.php
+++ b/src/Drivers/Imagick/Modifiers/ColorspaceModifier.php
@@ -15,7 +15,7 @@ use Intervention\Image\Modifiers\ColorspaceModifier as GenericColorspaceModifier
 
 class ColorspaceModifier extends GenericColorspaceModifier implements SpecializedInterface
 {
-    protected static $mapping = [
+    protected static array $mapping = [
         RgbColorspace::class => Imagick::COLORSPACE_SRGB,
         CmykColorspace::class => Imagick::COLORSPACE_CMYK,
     ];
diff --git a/src/Geometry/Tools/RectangleResizer.php b/src/Geometry/Tools/RectangleResizer.php
index 86be04d4..ae9faa71 100644
--- a/src/Geometry/Tools/RectangleResizer.php
+++ b/src/Geometry/Tools/RectangleResizer.php
@@ -33,7 +33,7 @@ class RectangleResizer
     /**
      * @throws GeometryException
      */
-    public static function to(...$arguments): self
+    public static function to(mixed ...$arguments): self
     {
         return new self(...$arguments);
     }