diff --git a/.github/workflows/build_scoped_rector_php70.yaml b/.github/workflows/build_scoped_rector_php70.yaml
index d7ee50d614d1..dd078f27dbca 100644
--- a/.github/workflows/build_scoped_rector_php70.yaml
+++ b/.github/workflows/build_scoped_rector_php70.yaml
@@ -47,10 +47,7 @@ jobs:
             # the vendor/phpstan/phpstan/bootstrap.php is statically included by composer, so better add empty file
             -   run: echo "<?php " > vendor/phpstan/phpstan/bootstrap.php
             -   run: rm -rf vendor/phpstan/phpstan/phpstan.phar
-            -   run: rm phpstan-for-rector.neon
-
-            # THIS MUST WORK
-            -   run: bin/rector downgrade-paths
+            -   run: rm -rf phpstan-for-rector.neon
 
             # 1. copy files to $NESTED_DIRECTORY directory Exclude the scoped/nested directories to prevent rsync from copying in a loop
             -  run: rsync --exclude rector-build-php70 -av * rector-build-php70 --quiet
@@ -72,8 +69,9 @@ jobs:
                     php-version: 7.0
                     coverage: none
             -   run: |
-                    cp -R rector-prefixed-downgraded-php70/vendor/rector/* vendor/rector/
-                    cp -R rector-prefixed-downgraded-php70/vendor/symfony/string/* vendor/symfony/string/
+                    rm -rf vendor && mkdir -p vendor
+                    cp -R rector-prefixed-downgraded-php70/vendor/* vendor/
+                    rm -rf php-parallel-lint
                     composer create-project php-parallel-lint/php-parallel-lint php-parallel-lint --ansi
 
             -   run: php-parallel-lint/parallel-lint rector-prefixed-downgraded-php70 --exclude rector-prefixed-downgraded-php70/stubs --exclude rector-prefixed-downgraded-php70/vendor/symfony/error-handler/Resources --exclude rector-prefixed-downgraded-php70/vendor/symfony/http-kernel/Resources --exclude rector-prefixed-downgraded-php70/vendor/rector/rector-nette/tests --exclude rector-prefixed-downgraded-php70/vendor/symfony/polyfill-mbstring/bootstrap80.php --exclude rector-prefixed-downgraded-php70/vendor/tracy/tracy/examples --exclude rector-prefixed-downgraded-php70/vendor/rector/rector-installer/tests --exclude rector-prefixed-downgraded-php70/vendor/symplify/smart-file-system/tests --exclude rector-prefixed-downgraded-php70/vendor/symfony/http-foundation/Session --exclude rector-prefixed-downgraded-php70/vendor/symfony/var-dumper --exclude rector-prefixed-downgraded-php70/vendor/nette/caching --exclude rector-prefixed-downgraded-php70/vendor/rector/rector-nette/src/Rector/LNumber --exclude rector-prefixed-downgraded-php70/vendor/symfony/http-foundation/Test --exclude rector-prefixed-downgraded-php70/vendor/symplify/simple-php-doc-parser/tests --exclude rector-prefixed-downgraded-php70/vendor/tracy/tracy/src/Tracy/Bar/panels/info.panel.phtml --exclude rector-prefixed-downgraded-php70/vendor/symfony/string/Slugger/AsciiSlugger.php
diff --git a/rules/DowngradePhp71/Rector/FunctionLike/DowngradeNullableTypeDeclarationRector.php b/rules/DowngradePhp71/Rector/FunctionLike/DowngradeNullableTypeDeclarationRector.php
index 1be61f56b354..92eaf7ccbf28 100644
--- a/rules/DowngradePhp71/Rector/FunctionLike/DowngradeNullableTypeDeclarationRector.php
+++ b/rules/DowngradePhp71/Rector/FunctionLike/DowngradeNullableTypeDeclarationRector.php
@@ -118,7 +118,7 @@ private function isNullableParam(Param $param): bool
     }
 
     /**
-     * @param ClassMethod|Function_ $functionLike
+     * @param ClassMethod|Function_|Closure $functionLike
      */
     private function refactorParamType(Param $param, FunctionLike $functionLike): bool
     {
@@ -133,7 +133,7 @@ private function refactorParamType(Param $param, FunctionLike $functionLike): bo
     }
 
     /**
-     * @param ClassMethod|Function_ $functionLike
+     * @param ClassMethod|Function_|Closure $functionLike
      */
     private function decorateWithDocBlock(FunctionLike $functionLike, Param $param): void
     {
diff --git a/scoper-php70.php b/scoper-php70.php
index 1e1dde8f3d75..f20f25a6872d 100644
--- a/scoper-php70.php
+++ b/scoper-php70.php
@@ -77,6 +77,28 @@ function (string $filePath, string $prefix, string $content): string {
             );
         },
 
+        function (string $filePath, string $prefix, string $content): string {
+            if (! Strings::contains($filePath, 'vendor/')) {
+                return $content;
+            }
+
+            // see https://regex101.com/r/PDGN3K/1
+            $content = Strings::replace(
+                $content, '
+                #: \?\\\\.*#',
+                ''
+            );
+
+            // see https://regex101.com/r/P7nbpU/1
+            $content = Strings::replace(
+                $content, '
+                #\(\?\\.*\s+#',
+                '('
+            );
+
+            return $content;
+        },
+
         // get version for prefixed version
         function (string $filePath, string $prefix, string $content): string {
             if (! Strings::endsWith($filePath, 'src/Configuration/Configuration.php')) {
@@ -151,7 +173,7 @@ function (string $filePath, string $prefix, string $content): string {
         },
 
         function (string $filePath, string $prefix, string $content): string {
-            if (! Strings::endsWith($filePath, 'vendor/symplify/autowire-array-parameter/src/Skipper/ParameterSkipper.php')) {
+            if (! Strings::contains($filePath, 'vendor/')) {
                 return $content;
             }
 
diff --git a/utils/compiler/src/Command/DowngradePathsCommand.php b/utils/compiler/src/Command/DowngradePathsCommand.php
index 407a47ef1840..6c9655065dd8 100644
--- a/utils/compiler/src/Command/DowngradePathsCommand.php
+++ b/utils/compiler/src/Command/DowngradePathsCommand.php
@@ -34,6 +34,10 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         $downgradePaths = array_merge([
             // must be separated to cover container get() trait + psr container contract get()
             'config',
+            'vendor/phpstan/phpdoc-parser/src',
+            'vendor/symfony/error-handler',
+            'vendor/symfony/dependency-injection',
+            'vendor/symfony/console',
             'vendor/symfony vendor/psr',
             'vendor/symplify vendor/nikic bin src packages rector.php',
             'rules',
@@ -41,6 +45,18 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 
         if (file_exists(getcwd() . '/vendor/phpstan/phpstan-extracted/vendor')) {
             $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/phpstan/phpdoc-parser/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/ondrejmirtes/better-reflection/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/nette/di/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/nette/php-generator/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/nette/utils/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/nette/schema/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/nette/finder/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/nette/robot-loader/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/ondram/ci-detector/src';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/symfony/finder';
+            $downgradePaths[] = 'vendor/phpstan/phpstan-extracted/vendor/symfony/console';
         }
 
         // bash format