diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 60818a6..76a7484 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,6 +20,7 @@ jobs:
       matrix:
         version:
           - master
+          - 5.9
           - 5.8.1
           - 5.8
           - 5.7.1