diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 56c8b03b6..18e7e9ab6 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,7 +11,7 @@ jobs:
         strategy:
             matrix:
                 os: [ubuntu-latest, windows-latest]
-                php: ['8.0', '8.1', '8.2', '8.3']
+                php: ['8.0', '8.1', '8.2', '8.3', '8.4']
                 sapi: ['php', 'php-cgi']
 
             fail-fast: false
diff --git a/composer.json b/composer.json
index 0683f5a1f..2ff2d3824 100644
--- a/composer.json
+++ b/composer.json
@@ -15,17 +15,17 @@
 		}
 	],
 	"require": {
-		"php": "8.0 - 8.3",
+		"php": "8.0 - 8.4",
 		"ext-session": "*",
 		"ext-json": "*"
 	},
 	"require-dev": {
-		"nette/utils": "^3.0",
+		"nette/utils": "^3.0 || ^4.0",
 		"nette/di": "^3.0",
 		"nette/http": "^3.0",
-		"nette/mail": "^3.0",
+		"nette/mail": "^3.0 || ^4.0",
 		"nette/tester": "^2.2",
-		"latte/latte": "^2.5",
+		"latte/latte": "^2.5 || ^3.0",
 		"psr/log": "^1.0 || ^2.0 || ^3.0",
 		"phpstan/phpstan": "^1.0"
 	},
diff --git a/readme.md b/readme.md
index 2368c1e9d..bacf2aee9 100644
--- a/readme.md
+++ b/readme.md
@@ -48,7 +48,7 @@ composer require tracy/tracy
 
 Alternatively, you can download the whole package or [tracy.phar](https://github.com/nette/tracy/releases) file.
 
-Tracy is compatible with PHP 8.0 to 8.3.
+Tracy is compatible with PHP 8.0 to 8.4.
 
  <!---->
 
diff --git a/tests/Tracy/Helpers.improveException.phpt b/tests/Tracy/Helpers.improveException.phpt
index 32e78325a..861619dbb 100644
--- a/tests/Tracy/Helpers.improveException.phpt
+++ b/tests/Tracy/Helpers.improveException.phpt
@@ -227,7 +227,7 @@ test('callable error: ignore syntax mismatch', function () {
 	}
 
 	Helpers::improveException($e);
-	Assert::match('{closure}(): Argument #1 ($a) must be of type callable, null given, called in %a%', $e->getMessage());
+	Assert::match('{closure%a?%}(): Argument #1 ($a) must be of type callable, null given, called in %a%', $e->getMessage());
 });
 
 test('callable error: typo in class name', function () {
@@ -237,7 +237,7 @@ test('callable error: typo in class name', function () {
 	}
 
 	Helpers::improveException($e);
-	Assert::match("{closure}(): Argument #1 (\$a) must be of type callable, but class 'PhpTokn' does not exist, called in %a%", $e->getMessage());
+	Assert::match("{closure%a?%}(): Argument #1 (\$a) must be of type callable, but class 'PhpTokn' does not exist, called in %a%", $e->getMessage());
 });
 
 test('callable error: typo in class name', function () {
@@ -247,7 +247,7 @@ test('callable error: typo in class name', function () {
 	}
 
 	Helpers::improveException($e);
-	Assert::match("{closure}(): Argument #1 (\$a) must be of type callable, but class 'PhpTokn' does not exist, called in %a%", $e->getMessage());
+	Assert::match("{closure%a?%}(): Argument #1 (\$a) must be of type callable, but class 'PhpTokn' does not exist, called in %a%", $e->getMessage());
 });
 
 test('callable error: typo in method name', function () {
@@ -257,7 +257,7 @@ test('callable error: typo in method name', function () {
 	}
 
 	Helpers::improveException($e);
-	Assert::match('{closure}(): Argument #1 ($a) must be of type callable, but method PhpToken::tokenze() does not exist (did you mean tokenize?), called in %a%', $e->getMessage());
+	Assert::match('{closure%a?%}(): Argument #1 ($a) must be of type callable, but method PhpToken::tokenze() does not exist (did you mean tokenize?), called in %a%', $e->getMessage());
 });
 
 test('callable error: typo in method name', function () {
@@ -267,7 +267,7 @@ test('callable error: typo in method name', function () {
 	}
 
 	Helpers::improveException($e);
-	Assert::match('{closure}(): Argument #1 ($a) must be of type callable, but method PhpToken::tokenze() does not exist (did you mean tokenize?), called in %a%', $e->getMessage());
+	Assert::match('{closure%a?%}(): Argument #1 ($a) must be of type callable, but method PhpToken::tokenze() does not exist (did you mean tokenize?), called in %a%', $e->getMessage());
 });
 
 test('callable error: typo in function name', function () {
@@ -277,5 +277,5 @@ test('callable error: typo in function name', function () {
 	}
 
 	Helpers::improveException($e);
-	Assert::match("{closure}(): Argument #1 (\$a) must be of type callable, but function 'trm' does not exist (did you mean trim?), called in %a%", $e->getMessage());
+	Assert::match("{closure%a?%}(): Argument #1 (\$a) must be of type callable, but function 'trm' does not exist (did you mean trim?), called in %a%", $e->getMessage());
 });
diff --git a/tests/Tracy/expected/Debugger.exception.fiber.html.expect b/tests/Tracy/expected/Debugger.exception.fiber.html.expect
index d6d6996c4..dedeefb40 100644
--- a/tests/Tracy/expected/Debugger.exception.fiber.html.expect
+++ b/tests/Tracy/expected/Debugger.exception.fiber.html.expect
@@ -175,7 +175,7 @@
 		</div>
 
 		<div class="tracy-callstack-callee">
-<b>{closure}</b> ()
+<b>{closure%a?%a}</b> ()
 		</div>
 
 	</div>