diff --git a/tests/Classes/DoctrineProxyForbiddenClassNamesExtensionTest.php b/tests/Classes/DoctrineProxyForbiddenClassNamesExtensionTest.php
index 7c92d905..5d6800fd 100644
--- a/tests/Classes/DoctrineProxyForbiddenClassNamesExtensionTest.php
+++ b/tests/Classes/DoctrineProxyForbiddenClassNamesExtensionTest.php
@@ -9,6 +9,7 @@
 
 /**
  * @extends RuleTestCase<InstantiationRule>
+ * @runInSeparateProcess
  */
 class DoctrineProxyForbiddenClassNamesExtensionTest extends RuleTestCase
 {
diff --git a/tests/Rules/Doctrine/ORM/DqlRuleTest.php b/tests/Rules/Doctrine/ORM/DqlRuleTest.php
index 32ea2396..6e019ebc 100644
--- a/tests/Rules/Doctrine/ORM/DqlRuleTest.php
+++ b/tests/Rules/Doctrine/ORM/DqlRuleTest.php
@@ -11,6 +11,7 @@
 
 /**
  * @extends RuleTestCase<DqlRule>
+ * @runInSeparateProcess
  */
 class DqlRuleTest extends RuleTestCase
 {
diff --git a/tests/Rules/Doctrine/ORM/EntityColumnRuleTest.php b/tests/Rules/Doctrine/ORM/EntityColumnRuleTest.php
index 31c64ad9..5fd80dcc 100644
--- a/tests/Rules/Doctrine/ORM/EntityColumnRuleTest.php
+++ b/tests/Rules/Doctrine/ORM/EntityColumnRuleTest.php
@@ -36,6 +36,7 @@
 
 /**
  * @extends RuleTestCase<EntityColumnRule>
+ * @runInSeparateProcess
  */
 class EntityColumnRuleTest extends RuleTestCase
 {
diff --git a/tests/Rules/Doctrine/ORM/EntityConstructorNotFinalRuleTest.php b/tests/Rules/Doctrine/ORM/EntityConstructorNotFinalRuleTest.php
index a94fdfde..5427f788 100644
--- a/tests/Rules/Doctrine/ORM/EntityConstructorNotFinalRuleTest.php
+++ b/tests/Rules/Doctrine/ORM/EntityConstructorNotFinalRuleTest.php
@@ -9,6 +9,7 @@
 
 /**
  * @extends RuleTestCase<EntityConstructorNotFinalRule>
+ * @runInSeparateProcess
  */
 class EntityConstructorNotFinalRuleTest extends RuleTestCase
 {
diff --git a/tests/Rules/Doctrine/ORM/EntityMappingExceptionRuleTest.php b/tests/Rules/Doctrine/ORM/EntityMappingExceptionRuleTest.php
index 65b8f209..b5881adb 100644
--- a/tests/Rules/Doctrine/ORM/EntityMappingExceptionRuleTest.php
+++ b/tests/Rules/Doctrine/ORM/EntityMappingExceptionRuleTest.php
@@ -9,6 +9,7 @@
 
 /**
  * @extends RuleTestCase<EntityMappingExceptionRule>
+ * @runInSeparateProcess
  */
 class EntityMappingExceptionRuleTest extends RuleTestCase
 {
diff --git a/tests/Rules/Doctrine/ORM/EntityNotFinalRuleTest.php b/tests/Rules/Doctrine/ORM/EntityNotFinalRuleTest.php
index d3f05395..a1474f56 100644
--- a/tests/Rules/Doctrine/ORM/EntityNotFinalRuleTest.php
+++ b/tests/Rules/Doctrine/ORM/EntityNotFinalRuleTest.php
@@ -9,6 +9,7 @@
 
 /**
  * @extends RuleTestCase<EntityNotFinalRule>
+ * @runInSeparateProcess
  */
 class EntityNotFinalRuleTest extends RuleTestCase
 {
diff --git a/tests/Rules/Doctrine/ORM/EntityRelationRuleTest.php b/tests/Rules/Doctrine/ORM/EntityRelationRuleTest.php
index 7e81545f..477b9157 100644
--- a/tests/Rules/Doctrine/ORM/EntityRelationRuleTest.php
+++ b/tests/Rules/Doctrine/ORM/EntityRelationRuleTest.php
@@ -10,6 +10,7 @@
 
 /**
  * @extends RuleTestCase<EntityRelationRule>
+ * @runInSeparateProcess
  */
 class EntityRelationRuleTest extends RuleTestCase
 {