diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 206dc9c..87cd8b1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,6 +19,14 @@ jobs:
             php-ts: nts
             continue-on-error: false
 
+          - operating-system: 'ubuntu-latest'
+            php-version: '8.3'
+            php-ts: nts
+            continue-on-error: false
+            static-analysis: none
+            style-fix: none
+            composer-require-checker-version: none
+
           - operating-system: 'ubuntu-latest'
             php-version: '8.1'
             php-extensions: parallel
@@ -49,6 +57,12 @@ jobs:
             php-ts: nts
             continue-on-error: false
 
+          - operating-system: 'windows-latest'
+            php-version: '8.3'
+            job-description: 'on Windows'
+            php-ts: nts
+            continue-on-error: false
+
     name: PHP ${{ matrix.php-version }} ${{ matrix.job-description }}
 
     runs-on: ${{ matrix.operating-system }}
@@ -98,6 +112,9 @@ jobs:
             composer update --optimize-autoloader --no-interaction --no-progress ${{ matrix.composer-flags }}
             composer info -D
 
+      - name: Run process example
+        run: php examples/process.php
+
       - name: Run tests
         run: vendor/bin/phpunit ${{ matrix.phpunit-flags }}
 
diff --git a/test/Context/AbstractContextTest.php b/test/Context/AbstractContextTest.php
index c1dd941..bf5b5ea 100644
--- a/test/Context/AbstractContextTest.php
+++ b/test/Context/AbstractContextTest.php
@@ -55,6 +55,9 @@ abstract class AbstractContextTest extends AsyncTestCase
 
         $context->send(1);
 
+        delay(1); // await TCP RST
+
+        $context->send(1);
         self::fail('Sending should have failed');
     }
 
@@ -96,7 +99,7 @@ abstract class AbstractContextTest extends AsyncTestCase
 
     public function testCloseWhenJoining(): void
     {
-        $this->setTimeout(1);
+        $this->setTimeout(3);
 
         $this->expectException(ContextException::class);
         $this->expectExceptionMessage('The context has already closed');
@@ -147,6 +150,8 @@ abstract class AbstractContextTest extends AsyncTestCase
         $context = $this->createContext(__DIR__ . "/Fixtures/exiting-process.php");
         delay(1);
         $context->send(1);
+        delay(1); // Await TCP RST
+        $context->send(1);
     }
 
     public function testCancelJoin(): void
diff --git a/test/Worker/AbstractPoolTest.php b/test/Worker/AbstractPoolTest.php
index 0d10f4f..21c2f35 100644
--- a/test/Worker/AbstractPoolTest.php
+++ b/test/Worker/AbstractPoolTest.php
@@ -122,7 +122,7 @@ abstract class AbstractPoolTest extends AbstractWorkerTest
 
     public function testPooledKill(): void
     {
-        $this->setTimeout(1);
+        $this->setTimeout(10);
 
         // See https://github.com/amphp/parallel/issues/66
         $pool = $this->createPool(1);