diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 5d2e0b586..550cea25d 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -7,7 +7,7 @@ steps:
     env:
       PHP_VERSION: "{{ matrix.php }}"
       TEST_SUITE: "{{ matrix.suite }}"
-      STACK_VERSION: 8.19.8-SNAPSHOT
+      STACK_VERSION: 8.19.9-SNAPSHOT
     matrix:
       setup:
         suite: