diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 19ceef0..73f87f5 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
@@ -41,7 +42,7 @@ 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