diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bbf9eb7..4215361 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,10 +7,11 @@ on:
 jobs:
   PHPUnit:
     name: PHPUnit (PHP ${{ matrix.php }})
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     strategy:
       matrix:
         php:
+          - 8.6
           - 8.5
           - 8.4
           - 8.3
@@ -48,7 +49,7 @@ jobs:
       - uses: actions/checkout@v7
       - uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.5
+          php-version: 8.6
           coverage: xdebug
           ini-file: development
       - run: composer install
@@ -57,7 +58,7 @@ jobs:
 
   PHPUnit-hhvm:
     name: PHPUnit (HHVM)
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     continue-on-error: true
     steps:
       - uses: actions/checkout@v7
diff --git a/composer.json b/composer.json
index 7bdffaf..3561155 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
     ],
     "require": {
         "php": ">=5.3.8",
-        "react/event-loop": "^1.2",
+        "react/event-loop": "^1.6",
         "evenement/evenement": "^3.0 || ^2.0 || ^1.0"
     },
     "require-dev": {
diff --git a/tests/DuplexResourceStreamIntegrationTest.php b/tests/DuplexResourceStreamIntegrationTest.php
index 7135e15..e2d66ae 100644
--- a/tests/DuplexResourceStreamIntegrationTest.php
+++ b/tests/DuplexResourceStreamIntegrationTest.php
@@ -309,7 +309,7 @@ public function testReadsLongChunksFromProcessPipe($condition, $loopFactory)
 
         $loop = $loopFactory();
 
-        $stream = new ReadableResourceStream(popen('dd if=/dev/zero bs=12345 count=1234 2>&-', 'r'), $loop);
+        $stream = new ReadableResourceStream(popen('dd if=/dev/zero bs=12345 count=1234 2>/dev/null', 'r'), $loop);
 
         $bytes = 0;
         $stream->on('data', function ($chunk) use (&$bytes) {