diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9887dba..a5abbae 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,7 +13,7 @@ jobs:
     tests:
         uses: janpecha/actions/.github/workflows/nette-tester-library.yml@master
         with:
-            phpVersions: '["5.6", "7.0", "7.1", "7.2", "7.3", "7.4", "8.0", "8.1", "8.2"]'
+            phpVersions: '["7.4", "8.0", "8.1", "8.2"]'
             lowestDependencies: true
 
     coding-style:
@@ -23,4 +23,4 @@ jobs:
         uses: janpecha/actions/.github/workflows/phpstan.yml@master
         with:
             extensions: phpstan/phpstan-nette
-            phpVersions: '["5.6", "7.0", "7.1", "7.2", "7.3", "7.4", "8.0", "8.1", "8.2"]'
+            phpVersions: '["7.4", "8.0", "8.1", "8.2"]'
diff --git a/code-checker.php b/code-checker.php
index 96eef7d..f1b5362 100644
--- a/code-checker.php
+++ b/code-checker.php
@@ -1,7 +1,12 @@
 <?php
 
 return function (JP\CodeChecker\CheckerConfig $config) {
-	$config->setPhpVersion(new JP\CodeChecker\Version('5.6.0'));
+	$config->setPhpVersion(new JP\CodeChecker\Version('7.4.0'));
+	$config->setParameters([
+		'php' => [
+			'strictTypes' => FALSE,
+		],
+	]);
 	$config->addPath('./src');
 	$config->addPath('./tests');
 	JP\CodeChecker\Sets\CzProjectMinimum::configure($config);
diff --git a/composer.json b/composer.json
index 5697fd0..56bd0c2 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
 		{"type": "other", "url": "https://www.janpecha.cz/donate/"}
 	],
 	"require": {
-		"php": "5.6 - 8.2",
+		"php": "7.4 - 8.2",
 		"nette/application": "^2.4 || ^3.0",
 		"nette/utils": "^2.4 || ^3.0 || ^4.0",
 		"latte/latte": "^2.4 || ^3.0"
diff --git a/readme.md b/readme.md
index f3dab24..057d046 100644
--- a/readme.md
+++ b/readme.md
@@ -18,7 +18,7 @@ Navigation component for Nette Framework.
 composer require inteve/navigation
 ```
 
-`Inteve\Navigation` requires PHP 5.6.0 or later and Nette 2.2+ or 3.0+.
+`Inteve\Navigation` requires PHP 7.4 or later and Nette 2.2+ or 3.0+.
 
 
 ## Usage