diff --git a/.github/workflows/code_analysis.yaml b/.github/workflows/code_analysis.yaml
index 25513870..f7fca2a2 100644
--- a/.github/workflows/code_analysis.yaml
+++ b/.github/workflows/code_analysis.yaml
@@ -30,7 +30,7 @@ jobs:
 
                     -
                         name: 'Class Leak'
-                        run: vendor/bin/class-leak check src tests --skip-path=Fixture --skip-path=Source
+                        run: vendor/bin/class-leak check src tests --skip-path=Fixture --skip-path=Source --skip-type="Rector\\ArgTyper\\PHPStan\\IgnoreAllErrorsExceptArgTyperErrorExtension"
 
                     -
                         name: 'Tests'
@@ -46,7 +46,7 @@ jobs:
 
                     -
                         name: 'Check Active Classes'
-                        run: vendor/bin/class-leak check src bin tests --ansi --skip-path=Fixture --skip-path=Source
+                        run: vendor/bin/class-leak check src bin tests --ansi --skip-path=Fixture --skip-path=Source --skip-type="Rector\\ArgTyper\\PHPStan\\IgnoreAllErrorsExceptArgTyperErrorExtension"
 
         name: ${{ matrix.actions.name }}
         runs-on: ubuntu-latest
diff --git a/config/phpstan-collecting-data.neon b/config/phpstan-collecting-data.neon
index 309ff0c8..cf562eac 100644
--- a/config/phpstan-collecting-data.neon
+++ b/config/phpstan-collecting-data.neon
@@ -14,3 +14,9 @@ parameters:
 rules:
     - Rector\ArgTyper\PHPStan\Rule\CollectFuncCallArgTypesRule
     - Rector\ArgTyper\PHPStan\Rule\CollectCallLikeArgTypesRule
+
+services:
+	-
+		class: Rector\ArgTyper\PHPStan\IgnoreAllErrorsExceptArgTyperErrorExtension
+		tags:
+			- phpstan.ignoreErrorExtension
diff --git a/src/PHPStan/IgnoreAllErrorsExceptArgTyperErrorExtension.php b/src/PHPStan/IgnoreAllErrorsExceptArgTyperErrorExtension.php
new file mode 100644
index 00000000..2b09b5de
--- /dev/null
+++ b/src/PHPStan/IgnoreAllErrorsExceptArgTyperErrorExtension.php
@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\ArgTyper\PHPStan;
+
+use PhpParser\Node;
+use PHPStan\Analyser\Error;
+use PHPStan\Analyser\IgnoreErrorExtension;
+use PHPStan\Analyser\Scope;
+
+final class IgnoreAllErrorsExceptArgTyperErrorExtension implements IgnoreErrorExtension
+{
+    public function shouldIgnore(Error $error, Node $node, Scope $scope): bool
+    {
+		// Ignore all errors since ArgTyper only collects types and doesn't throw errors
+        return true;
+    }
+}