diff --git a/.ddev/config.yaml b/.ddev/config.yaml
index afc9776564..26cba10525 100644
--- a/.ddev/config.yaml
+++ b/.ddev/config.yaml
@@ -1,7 +1,7 @@
 name: my-friendica
 type: php
 docroot: ""
-php_version: "7.3"
+php_version: "7.4"
 webserver_type: apache-fpm
 router_http_port: "80"
 router_https_port: "443"
@@ -17,7 +17,7 @@ use_dns_when_possible: true
 composer_version: "1"
 web_environment: []
 nodejs_version: "16"
-webimage_extra_packages: [php7.3-gmp]
+webimage_extra_packages: [php7.4-gmp]
 
 # Key features of ddev's config.yaml:
 
diff --git a/.woodpecker/.phpunit.yml b/.woodpecker/.phpunit.yml
index 325a2d9c1c..97ea09d374 100644
--- a/.woodpecker/.phpunit.yml
+++ b/.woodpecker/.phpunit.yml
@@ -1,7 +1,5 @@
 matrix:
   include:
-    - PHP_MAJOR_VERSION: 7.3
-      PHP_VERSION: 7.3.33
     - PHP_MAJOR_VERSION: 7.4
       PHP_VERSION: 7.4.33
     - PHP_MAJOR_VERSION: 8.0
diff --git a/composer.json b/composer.json
index 9a86ebc2cc..21603c7b27 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
 		"issues": "https://github.com/friendica/friendica/issues"
 	},
 	"require": {
-		"php": ">=7.3",
+		"php": ">=7.4",
 		"ext-ctype": "*",
 		"ext-curl": "*",
 		"ext-dom": "*",
@@ -44,7 +44,7 @@
 		"mattwright/urlresolver": "^2.0",
 		"michelf/php-markdown": "^1.7",
 		"minishlink/web-push": "^6.0",
-		"mobiledetect/mobiledetectlib": "^2.8",
+		"mobiledetect/mobiledetectlib": "^3.74",
 		"nikic/fast-route": "^1.3",
 		"paragonie/hidden-string": "^1.0",
 		"patrickschur/language-detection": "^5.0.0",
@@ -53,7 +53,7 @@
 		"pragmarx/google2fa": "^5.0",
 		"pragmarx/recovery": "^0.2",
 		"psr/clock": "^1.0",
-		"psr/container": "^1.0",
+		"psr/container": "^2.0",
 		"psr/log": "^1.1",
 		"seld/cli-prompt": "^1.0",
 		"smarty/smarty": "^4",
@@ -102,7 +102,7 @@
 	},
 	"config": {
 		"platform": {
-			"php": "7.3"
+			"php": "7.4"
 		},
 		"autoloader-suffix": "Friendica",
 		"optimize-autoloader": true,
diff --git a/doc/Install.md b/doc/Install.md
index dc390fbc8a..4715c27233 100644
--- a/doc/Install.md
+++ b/doc/Install.md
@@ -28,7 +28,7 @@ Due to the large variety of operating systems and PHP platforms in existence we
 ### Requirements
 
 * Apache with mod-rewrite enabled and "Options All" so you can use a local `.htaccess` file
-* PHP 7.3+
+* PHP 7.4+
   * PHP *command line* access with register_argc_argv set to true in the php.ini file
   * Curl, GD, GMP, PDO, mbstrings, MySQLi, hash, xml, zip, IntlChar and OpenSSL extensions
   * The POSIX module of PHP needs to be activated (e.g. [RHEL, CentOS](http://www.bigsoft.co.uk/blog/index.php/2014/12/08/posix-php-commands-not-working-under-centos-7) have disabled it)
diff --git a/doc/de/Install.md b/doc/de/Install.md
index db99367af3..0122988c59 100644
--- a/doc/de/Install.md
+++ b/doc/de/Install.md
@@ -25,7 +25,7 @@ Requirements
 ---
 
 * Apache mit einer aktiverten mod-rewrite-Funktion und dem Eintrag "Options All", so dass du die lokale .htaccess-Datei nutzen kannst
-* PHP  7.3+
+* PHP  7.4+
   * PHP *Kommandozeilen*-Zugang mit register_argc_argv auf "true" gesetzt in der php.ini-Datei
   * Curl, GD, GMP, PDO, mbstrings, MySQLi, hash, xml, zip, IntlChar and OpenSSL-Erweiterung
   * Das POSIX Modul muss aktiviert sein ([CentOS, RHEL](http://www.bigsoft.co.uk/blog/index.php/2014/12/08/posix-php-commands-not-working-under-centos-7http://www.bigsoft.co.uk/blog/index.php/2014/12/08/posix-php-commands-not-working-under-centos-7) haben dies z.B. deaktiviert)
diff --git a/tests/functional/DependencyCheckTest.php b/tests/functional/DependencyCheckTest.php
index 4488fe5868..5d0b63a6af 100644
--- a/tests/functional/DependencyCheckTest.php
+++ b/tests/functional/DependencyCheckTest.php
@@ -80,12 +80,6 @@ class DependencyCheckTest extends FixtureTest
 
 	public function testDatabase()
 	{
-		// PDO needs to be disabled for PHP 7.2, see https://jira.mariadb.org/browse/MDEV-24121
-		if (version_compare(PHP_VERSION, '7.3') < 0) {
-			$configCache = $this->dice->create(Cache::class);
-			$configCache->set('database', 'disable_pdo', true);
-		}
-
 		/** @var Database $database */
 		$database = $this->dice->create(Database::class);