diff --git a/.github/workflows/run-test-suite.yml b/.github/workflows/run-test-suite.yml
index b375cf06c..66ab0dde0 100644
--- a/.github/workflows/run-test-suite.yml
+++ b/.github/workflows/run-test-suite.yml
@@ -95,6 +95,8 @@ jobs:
 
       - name: Run tests
         run: ${{ inputs.test-command }}
+        env:
+          XDEBUG_MODE: off
 
       - name: Check for failures
         if: steps.validate.outcome == 'failure'
diff --git a/testing/README.md b/testing/README.md
index 0adcecab2..ab125de16 100644
--- a/testing/README.md
+++ b/testing/README.md
@@ -139,7 +139,7 @@ workflow has a timer, the server doesn't wait for it and continues immediately.
 this behaviour you can use `TestService` class:
 
 ```php
-$testService = TestService::create('localhost:7233');
+$testService = TestService::create('127.0.0.1:7233');
 $testService->lockTimeSkipping();
 
 // ...
@@ -217,7 +217,7 @@ final class SimpleWorkflowTestCase extends TestCase
 
     protected function setUp(): void
     {
-        $this->workflowClient = new WorkflowClient(ServiceClient::create('localhost:7233'));
+        $this->workflowClient = new WorkflowClient(ServiceClient::create('127.0.0.1:7233'));
         $this->activityMocks = new ActivityMocker();
 
         parent::setUp();
diff --git a/tests/.rr.yaml b/tests/.rr.yaml
index 112c1ab3d..0048694bd 100644
--- a/tests/.rr.yaml
+++ b/tests/.rr.yaml
@@ -10,7 +10,7 @@ server:
 
 # Workflow and activity mesh service
 temporal:
-    address: "localhost:7233"
+    address: "127.0.0.1:7233"
     activities:
       num_workers: 4
     debug_level: 2
diff --git a/tests/Acceptance/.rr.yaml b/tests/Acceptance/.rr.yaml
index 2271a06fc..13e4a9df0 100644
--- a/tests/Acceptance/.rr.yaml
+++ b/tests/Acceptance/.rr.yaml
@@ -7,7 +7,7 @@ server:
 
 # Workflow and activity mesh service
 temporal:
-    address: ${TEMPORAL_ADDRESS:-localhost:7233}
+    address: ${TEMPORAL_ADDRESS:-127.0.0.1:7233}
     namespace: ${TEMPORAL_NAMESPACE:-default}
     activities:
         num_workers: 2
@@ -18,4 +18,4 @@ kv:
         config: { }
 
 logs:
-    mode: none
+    mode: none #info
diff --git a/tests/Functional/.rr.silent.yaml b/tests/Functional/.rr.silent.yaml
index 5c8c91067..c8aa584fd 100644
--- a/tests/Functional/.rr.silent.yaml
+++ b/tests/Functional/.rr.silent.yaml
@@ -8,7 +8,7 @@ server:
 
 # Workflow and activity mesh service
 temporal:
-    address: "localhost:7233"
+    address: "127.0.0.1:7233"
     activities:
       num_workers: 1
 
diff --git a/tests/Functional/Client/AbstractClient.php b/tests/Functional/Client/AbstractClient.php
index 6342207ed..6734159bd 100644
--- a/tests/Functional/Client/AbstractClient.php
+++ b/tests/Functional/Client/AbstractClient.php
@@ -28,7 +28,7 @@ abstract class AbstractClient extends AbstractFunctional
      * @param string $connection
      * @return WorkflowClient
      */
-    protected function createClient(string $connection = 'localhost:7233'): WorkflowClient
+    protected function createClient(string $connection = '127.0.0.1:7233'): WorkflowClient
     {
         return new WorkflowClient(
             ServiceClient::create($connection)
diff --git a/tests/Functional/Client/TypedStubTestCase.php b/tests/Functional/Client/TypedStubTestCase.php
index 13e3052c5..21abcc458 100644
--- a/tests/Functional/Client/TypedStubTestCase.php
+++ b/tests/Functional/Client/TypedStubTestCase.php
@@ -130,8 +130,8 @@ public function testGetDTOResult()
 
     public function testVoidReturnType()
     {
-        $w = $this->createClient();
-        $dto = $w->newWorkflowStub(ActivityReturnTypeWorkflow::class);
+        $client = $this->createClient();
+        $dto = $client->newWorkflowStub(ActivityReturnTypeWorkflow::class);
 
         $this->assertEquals(
             100,
diff --git a/tests/Functional/HistoryLengthWorkflowTestCase.php b/tests/Functional/HistoryLengthWorkflowTestCase.php
index c8a5b91db..153aa426c 100644
--- a/tests/Functional/HistoryLengthWorkflowTestCase.php
+++ b/tests/Functional/HistoryLengthWorkflowTestCase.php
@@ -18,7 +18,7 @@ final class HistoryLengthWorkflowTestCase extends TestCase
     protected function setUp(): void
     {
         $this->workflowClient = new WorkflowClient(
-            ServiceClient::create('localhost:7233')
+            ServiceClient::create('127.0.0.1:7233')
         );
         $this->activityMocks = new ActivityMocker();
 
diff --git a/tests/Functional/Interceptor/AbstractClient.php b/tests/Functional/Interceptor/AbstractClient.php
index 5853062b8..042a9eae7 100644
--- a/tests/Functional/Interceptor/AbstractClient.php
+++ b/tests/Functional/Interceptor/AbstractClient.php
@@ -26,7 +26,7 @@ abstract class AbstractClient extends AbstractFunctional
      * @param string $connection
      * @return WorkflowClient
      */
-    protected function createClient(string $connection = 'localhost:7233'): WorkflowClient
+    protected function createClient(string $connection = '127.0.0.1:7233'): WorkflowClient
     {
         return new WorkflowClient(
             ServiceClient::create($connection),
diff --git a/tests/Functional/NamedArgumentsTestCase.php b/tests/Functional/NamedArgumentsTestCase.php
index 9584b8616..0a5e40251 100644
--- a/tests/Functional/NamedArgumentsTestCase.php
+++ b/tests/Functional/NamedArgumentsTestCase.php
@@ -23,7 +23,7 @@ final class NamedArgumentsTestCase extends TestCase
     protected function setUp(): void
     {
         $this->workflowClient = new WorkflowClient(
-            ServiceClient::create('localhost:7233')
+            ServiceClient::create('127.0.0.1:7233')
         );
 
         parent::setUp();
diff --git a/tests/Functional/SimpleWorkflowTestCase.php b/tests/Functional/SimpleWorkflowTestCase.php
index 19b6901f5..dfbeec033 100644
--- a/tests/Functional/SimpleWorkflowTestCase.php
+++ b/tests/Functional/SimpleWorkflowTestCase.php
@@ -130,7 +130,7 @@ public function testWorkflowMethodInAbstractParent(): void
     protected function setUp(): void
     {
         $this->workflowClient = new WorkflowClient(
-            ServiceClient::create('localhost:7233'),
+            ServiceClient::create('127.0.0.1:7233'),
         );
         $this->activityMocks = new ActivityMocker();