diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e1c9a739b..1105bac5b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,7 +7,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                php: ['8.0', '8.1', '8.2', '8.3']
+                php: ['8.0', '8.1', '8.2', '8.3', '8.4']
 
             fail-fast: false
 
diff --git a/composer.json b/composer.json
index a735d680a..40946a0dd 100644
--- a/composer.json
+++ b/composer.json
@@ -15,16 +15,16 @@
 		}
 	],
 	"require": {
-		"php": "8.0 - 8.3",
+		"php": "8.0 - 8.4",
 		"ext-json": "*",
 		"ext-tokenizer": "*"
 	},
 	"require-dev": {
-		"nette/tester": "^2.0",
-		"tracy/tracy": "^2.3",
-		"nette/utils": "^3.0",
+		"nette/tester": "^2.5",
+		"tracy/tracy": "^2.10",
+		"nette/utils": "^4.0",
 		"phpstan/phpstan": "^1",
-		"nette/php-generator": "^3.6 || ^4.0"
+		"nette/php-generator": "^4.0"
 	},
 	"suggest": {
 		"ext-iconv": "to use filters |reverse, |substring",
diff --git a/src/Latte/Compiler/TagLexer.php b/src/Latte/Compiler/TagLexer.php
index 38bbf014e..710b603e2 100644
--- a/src/Latte/Compiler/TagLexer.php
+++ b/src/Latte/Compiler/TagLexer.php
@@ -66,7 +66,7 @@ public function tokenize(string $input, ?Position $position = null): array
 
 
 	/** @return Token[] */
-	public function tokenizePartially(string $input, Position &$position, int $ofs = null): array
+	public function tokenizePartially(string $input, Position &$position, ?int $ofs = null): array
 	{
 		$this->input = $input;
 		$this->offset = $ofs ?? $position->offset;
diff --git a/src/Latte/Compiler/TemplateParser.php b/src/Latte/Compiler/TemplateParser.php
index 2dd8eb9f6..279ee6406 100644
--- a/src/Latte/Compiler/TemplateParser.php
+++ b/src/Latte/Compiler/TemplateParser.php
@@ -82,7 +82,7 @@ public function parse(string $template): Nodes\TemplateNode
 	}
 
 
-	public function parseFragment(callable $resolver, callable $after = null): FragmentNode
+	public function parseFragment(callable $resolver, ?callable $after = null): FragmentNode
 	{
 		$res = new FragmentNode;
 		$save = [$this->lastResolver, $this->tag];