diff --git a/.gitignore b/.gitignore
index a17970c..e6ccc4f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,4 @@
 !.vscode/extensions.json
 config.codekit3
 prepros-6.config
+composer.lock
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0315f77..c2447a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## 2.0.0 - 2022-05-04
+### Added
+- Craft v4 support
+
 ## 1.0.0 - 2019-08-12
 ### Added
 - Initial release
diff --git a/composer.json b/composer.json
index cafd6ec..c8bf3b1 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "nthmedia/photo-exif",
     "description": "The plugin reads EXIF data from photos",
     "type": "craft-plugin",
-    "version": "0.0.1",
+    "version": "2.0",
     "keywords": [
         "craft",
         "cms",
@@ -10,10 +10,6 @@
         "craft-plugin",
         "photo exif"
     ],
-    "support": {
-        "docs": "???",
-        "issues": "???"
-    },
     "license": "MIT",
     "authors": [
         {
@@ -22,7 +18,8 @@
         }
     ],
     "require": {
-        "craftcms/cms": "^3.0.0-RC1"
+        "php": "^8.0",
+        "craftcms/cms": "^4.0"
     },
     "autoload": {
         "psr-4": {
@@ -39,5 +36,18 @@
             "metadata": "nthmedia\\photoexif\\services\\Metadata"
         },
         "class": "nthmedia\\photoexif\\PhotoExif"
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true,
+    "require-dev": {
+        "craftcms/rector": "dev-main",
+        "craftcms/ecs": "dev-main",
+        "phpstan/phpstan": "^1.6"
+    },
+    "config": {
+        "allow-plugins": {
+            "yiisoft/yii2-composer": true,
+            "craftcms/plugin-installer": true
+        }
     }
 }
diff --git a/src/PhotoExif.php b/src/PhotoExif.php
index 2bf2cf4..13389bf 100644
--- a/src/PhotoExif.php
+++ b/src/PhotoExif.php
@@ -51,7 +51,7 @@ class PhotoExif extends Plugin
     /**
      * @var string
      */
-    public $schemaVersion = '1.0.0';
+    public string $schemaVersion = '1.0.0';
 
     // Public Methods
     // =========================================================================
diff --git a/src/fields/Coordinates.php b/src/fields/Coordinates.php
index 7b64c46..ddcf17c 100644
--- a/src/fields/Coordinates.php
+++ b/src/fields/Coordinates.php
@@ -71,7 +71,7 @@ public function getElementValidationRules(): array
     /**
      * @inheritdoc
      */
-    public function getContentColumnType(): string
+    public function getContentColumnType(): array|string
     {
         return Schema::TYPE_STRING;
     }
@@ -79,7 +79,7 @@ public function getContentColumnType(): string
     /**
      * @inheritdoc
      */
-    public function normalizeValue($value, ElementInterface $element = null)
+    public function normalizeValue(mixed $value, ?\craft\base\ElementInterface $element = null): mixed
     {
         return $value;
     }
@@ -87,7 +87,7 @@ public function normalizeValue($value, ElementInterface $element = null)
     /**
      * @inheritdoc
      */
-    public function serializeValue($value, ElementInterface $element = null)
+    public function serializeValue(mixed $value, ?\craft\base\ElementInterface $element = null): mixed
     {
         // Replace spaces in the string
         $value = str_replace(' ', '', $value);
@@ -97,7 +97,7 @@ public function serializeValue($value, ElementInterface $element = null)
     /**
      * @inheritdoc
      */
-    public function getInputHtml($value, ElementInterface $element = null): string
+    public function getInputHtml(mixed $value, ?\craft\base\ElementInterface $element = null): string
     {
         // Get our id and namespace
         $id = Craft::$app->getView()->formatInputId($this->handle);
@@ -131,7 +131,7 @@ public function getInputHtml($value, ElementInterface $element = null): string
     /**
      * @inheritdoc
      */
-    public function getTableAttributeHtml($value, ElementInterface $element): string
+    public function getTableAttributeHtml(mixed $value, ElementInterface $element): string
     {
         if ($value) {
             $value = preg_replace_callback(
diff --git a/src/twigextensions/PhotoExifTwigExtension.php b/src/twigextensions/PhotoExifTwigExtension.php
index 6c1589b..dfa0db5 100644
--- a/src/twigextensions/PhotoExifTwigExtension.php
+++ b/src/twigextensions/PhotoExifTwigExtension.php
@@ -19,7 +19,7 @@
  * @package   PhotoExif
  * @since     1.0.0
  */
-class PhotoExifTwigExtension extends \Twig_Extension
+class PhotoExifTwigExtension extends \Twig\Extension\AbstractExtension
 {
     // Public Methods
     // =========================================================================
@@ -38,7 +38,7 @@ public function getName()
     public function getFilters()
     {
         return [
-            new \Twig_SimpleFilter('someFilter', [$this, 'someInternalFunction']),
+            new \Twig\TwigFilter('someFilter', [$this, 'someInternalFunction']),
         ];
     }
 
@@ -48,7 +48,7 @@ public function getFilters()
     public function getFunctions()
     {
         return [
-            new \Twig_SimpleFunction('someFunction', [$this, 'someInternalFunction']),
+            new \Twig\TwigFunction('someFunction', [$this, 'someInternalFunction']),
         ];
     }