diff --git a/composer.json b/composer.json
index 41d6e30..321c0ad 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,6 @@
 	"require-dev": {
 		"ext-intl": "*",
 		"brianium/paratest": "^6.3.0",
-		"cweagans/composer-patches": "^1.7.3",
 		"infection/infection": "0.26.6",
 		"latte/latte": "^2.5.0|^3.0.4",
 		"nette/application": "^3.1.0",
@@ -70,20 +69,9 @@
 	"config": {
 		"sort-packages": true,
 		"allow-plugins": {
-			"cweagans/composer-patches": true,
 			"dealerdirect/phpcodesniffer-composer-installer": true,
 			"infection/extension-installer": true,
 			"phpstan/extension-installer": true
 		}
-	},
-	"extra": {
-		"patches": {
-			"phpunit/php-code-coverage": {
-				"Class not found error fix": "tests/Patches/coverage-invalid-file-error.patch"
-			},
-			"infection/infection": {
-				"Class not found error fix": "tests/Patches/mutations-invalid-file-error.patch"
-			}
-		}
 	}
 }
diff --git a/tests/Patches/coverage-invalid-file-error.patch b/tests/Patches/coverage-invalid-file-error.patch
deleted file mode 100644
index 2fea333..0000000
--- a/tests/Patches/coverage-invalid-file-error.patch
+++ /dev/null
@@ -1,29 +0,0 @@
-From 085e85e23d86b49cae114fcbe322325462c058cc Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Marek=20Barto=C5=A1?= <bartos.developer152@gmail.com>
-Date: Fri, 23 Dec 2022 16:27:23 +0100
-Subject: [PATCH] Fix coverage failure in case of an invalid file
-
----
- src/CodeCoverage.php | 6 +++++-
- 1 file changed, 5 insertions(+), 1 deletion(-)
-
-diff --git a/src/CodeCoverage.php b/src/CodeCoverage.php
-index c35f27c8..9340f673 100644
---- a/src/CodeCoverage.php
-+++ b/src/CodeCoverage.php
-@@ -550,7 +550,11 @@ private function processUncoveredFilesFromFilter(): void
- 
-         foreach ($uncoveredFiles as $uncoveredFile) {
-             if ($this->filter->isFile($uncoveredFile)) {
--                include_once $uncoveredFile;
-+                try {
-+                    include_once $uncoveredFile;
-+                } catch (\Error $e) {
-+                    // Include may fail if file content is not valid (due to implementing/extending non-existent class, ...)
-+                }
-             }
-         }
- 
--- 
-2.34.1.windows.1
-
diff --git a/tests/Patches/mutations-invalid-file-error.patch b/tests/Patches/mutations-invalid-file-error.patch
deleted file mode 100644
index 0a54cde..0000000
--- a/tests/Patches/mutations-invalid-file-error.patch
+++ /dev/null
@@ -1,37 +0,0 @@
-From 1534b7afd75b80d3a6d0841c8f250db7242e56d4 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Marek=20Barto=C5=A1?= <bartos.developer152@gmail.com>
-Date: Fri, 23 Dec 2022 16:59:16 +0100
-Subject: [PATCH] Fix coverage failure in case of an invalid file
-
----
- src/PhpParser/Visitor/ReflectionVisitor.php | 7 ++++++-
- 1 file changed, 6 insertions(+), 1 deletion(-)
-
-diff --git a/src/PhpParser/Visitor/ReflectionVisitor.php b/src/PhpParser/Visitor/ReflectionVisitor.php
-index 2115bf03..666a1c7f 100644
---- a/src/PhpParser/Visitor/ReflectionVisitor.php
-+++ b/src/PhpParser/Visitor/ReflectionVisitor.php
-@@ -37,6 +37,7 @@ namespace Infection\PhpParser\Visitor;
- 
- use function array_pop;
- use function count;
-+use Error;
- use Infection\Reflection\AnonymousClassReflection;
- use Infection\Reflection\ClassReflection;
- use Infection\Reflection\CoreClassReflection;
-@@ -184,7 +185,11 @@ final class ReflectionVisitor extends NodeVisitorAbstract
-         $fqn = FullyQualifiedClassNameManipulator::getFqcn($node);
- 
-         if ($fqn !== null) {
--            return CoreClassReflection::fromClassName($fqn->toString());
-+            try {
-+                return CoreClassReflection::fromClassName($fqn->toString());
-+            } catch (Error $e) {
-+                return new NullReflection();
-+            }
-         }
- 
-         // TODO: check against interfaces
--- 
-2.34.1.windows.1
-