diff --git a/.drone.yml b/.drone.yml
index 93e1a53c18ee9..078ae77738383 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -38,6 +38,13 @@ steps:
     commands:
       - ./libraries/vendor/bin/phan
 
+  - name: phpstan
+    image: joomlaprojects/docker-images:php8.2
+    depends_on: [ phpcs ]
+    failure: ignore
+    commands:
+      - ./libraries/vendor/bin/phpstan
+
   - name: npm
     image: node:20-bullseye-slim
     depends_on: [ phpcs ]
@@ -414,6 +421,6 @@ trigger:
 
 ---
 kind: signature
-hmac: bd41423d85abadb875c8fc911f87596ead88b62d26fabf6a283737c5a7b4c5b9
+hmac: ddec56bc5feb60a0a7009d94356b2425e3a3ae112f3f0c89683e1a55f87fa9c2
 
 ...
diff --git a/build/build.php b/build/build.php
index 34818dedb56a2..744a4f7600cde 100644
--- a/build/build.php
+++ b/build/build.php
@@ -73,6 +73,7 @@ function clean_checkout(string $dir)
     system('find . -name psalm.xml.dist | xargs rm -rf -');
     system('find . -name phpcs.xml | xargs rm -rf -');
     system('find . -name phpcs.xml.dist | xargs rm -rf -');
+    system('find . -name phpstan.neon | xargs rm -rf -');
     system('find . -name phpunit.xml | xargs rm -rf -');
     system('find . -name phpunit.*.xml | xargs rm -rf -');
     system('find . -name phpunit.xml.dist | xargs rm -rf -');
@@ -408,6 +409,7 @@ function clean_composer(string $dir)
     'package.json',
     'phpunit-pgsql.xml.dist',
     'phpunit.xml.dist',
+    'phpstan.neon',
     'plugins/sampledata/testing/language/en-GB/en-GB.plg_sampledata_testing.ini',
     'plugins/sampledata/testing/language/en-GB/en-GB.plg_sampledata_testing.sys.ini',
     'plugins/sampledata/testing/testing.php',
diff --git a/composer.json b/composer.json
index c27b508dfc2ed..3c113d87d3c24 100644
--- a/composer.json
+++ b/composer.json
@@ -115,7 +115,9 @@
     "dealerdirect/phpcodesniffer-composer-installer": "^0.7.2",
     "joomla/mediawiki": "^3.0",
     "joomla/test": "~3.0",
-    "phan/phan": "^5.4.3"
+    "phan/phan": "^5.4.3",
+    "phpstan/phpstan": "^1.11",
+    "phpstan/phpstan-deprecation-rules": "^1.2"
   },
   "replace": {
     "paragonie/random_compat": "9.99.99",
diff --git a/composer.lock b/composer.lock
index f8384595e0deb..3ae3df1f9da64 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "b25e220b440613ef9279a3625e03eb71",
+    "content-hash": "398727a09c40cf85a82f3c8cdf83e3b4",
     "packages": [
         {
             "name": "algo26-matthias/idna-convert",
@@ -8163,6 +8163,111 @@
             },
             "time": "2024-05-31T08:52:43+00:00"
         },
+        {
+            "name": "phpstan/phpstan",
+            "version": "1.11.7",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpstan.git",
+                "reference": "52d2bbfdcae7f895915629e4694e9497d0f8e28d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/52d2bbfdcae7f895915629e4694e9497d0f8e28d",
+                "reference": "52d2bbfdcae7f895915629e4694e9497d0f8e28d",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2|^8.0"
+            },
+            "conflict": {
+                "phpstan/phpstan-shim": "*"
+            },
+            "bin": [
+                "phpstan",
+                "phpstan.phar"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPStan - PHP Static Analysis Tool",
+            "keywords": [
+                "dev",
+                "static analysis"
+            ],
+            "support": {
+                "docs": "https://phpstan.org/user-guide/getting-started",
+                "forum": "https://github.com/phpstan/phpstan/discussions",
+                "issues": "https://github.com/phpstan/phpstan/issues",
+                "security": "https://github.com/phpstan/phpstan/security/policy",
+                "source": "https://github.com/phpstan/phpstan-src"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/ondrejmirtes",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/phpstan",
+                    "type": "github"
+                }
+            ],
+            "time": "2024-07-06T11:17:41+00:00"
+        },
+        {
+            "name": "phpstan/phpstan-deprecation-rules",
+            "version": "1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpstan-deprecation-rules.git",
+                "reference": "fa8cce7720fa782899a0aa97b6a41225d1bb7b26"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan-deprecation-rules/zipball/fa8cce7720fa782899a0aa97b6a41225d1bb7b26",
+                "reference": "fa8cce7720fa782899a0aa97b6a41225d1bb7b26",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2 || ^8.0",
+                "phpstan/phpstan": "^1.11"
+            },
+            "require-dev": {
+                "php-parallel-lint/php-parallel-lint": "^1.2",
+                "phpstan/phpstan-phpunit": "^1.0",
+                "phpunit/phpunit": "^9.5"
+            },
+            "type": "phpstan-extension",
+            "extra": {
+                "phpstan": {
+                    "includes": [
+                        "rules.neon"
+                    ]
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PHPStan\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPStan rules for detecting usage of deprecated classes, methods, properties, constants and traits.",
+            "support": {
+                "issues": "https://github.com/phpstan/phpstan-deprecation-rules/issues",
+                "source": "https://github.com/phpstan/phpstan-deprecation-rules/tree/1.2.0"
+            },
+            "time": "2024-04-20T06:39:48+00:00"
+        },
         {
             "name": "phpunit/php-code-coverage",
             "version": "9.2.31",
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000000000..3c04e54f128f7
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,41 @@
+parameters:
+	level: 0
+	scanDirectories:
+		- libraries/php-encryption
+		- libraries/phpass
+	scanFiles:
+		- libraries/loader.php
+		- libraries/namespacemap.php
+	paths:
+		- libraries/src
+		- administrator
+		- components
+		- installation
+		- plugins
+	excludePaths:
+		- administrator/cache
+		- administrator/components/com_joomlaupdate/finalisation.php
+	ignoreErrors:
+		-
+			message: '#Access to protected property [a-zA-Z0-9\\_]+\\HtmlView::\$[a-zA-Z0-9\\_]+.#'
+			paths:
+				- components/*
+				- administrator/components/*
+		-
+			message: '#Call to protected method [a-zA-Z0-9\\_]+\(\) of class Joomla\\CMS\\MVC\\View\\AbstractView\.#'
+			paths:
+				- components/*
+				- administrator/components/*
+		-
+			message: '#Call to protected method [a-zA-Z0-9\\_]+\(\) of class Joomla\\CMS\\MVC\\View\\HtmlView\.#'
+			paths:
+				- components/*
+				- administrator/components/*
+		-
+			message: '#Call to protected method [a-zA-Z0-9\\_]+\(\) of class Joomla\\CMS\\.*\.#'
+			paths:
+				- plugins/*
+		-
+			message: '#Call to deprecated method \_\(\) of class Joomla\\CMS\\Language\\Language.*#'
+includes:
+	- libraries/vendor/phpstan/phpstan-deprecation-rules/rules.neon