diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 730de26e..af9b7d8a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -20,6 +20,10 @@ jobs:
     strategy:
       matrix:
         php-versions: ['7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
+        include:
+          # 8.4 is experimental due to Guzzle causing failures https://github.com/PrivateBin/PrivateBin/issues/1301
+          - php-versions: '8.4'
+            experimental: true
     name: PHP ${{ matrix.php-versions }} unit tests on ${{ matrix.operating-system }}
     env:
       extensions: gd, sqlite3