diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 7f268e4..a01e611 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -28,6 +28,6 @@ steps:
           - '3.9'
           - '3.8'
         stack:
-          - '8.7-SNAPSHOT'
           - '8.8-SNAPSHOT'
+          - '8.9-SNAPSHOT'
     command: ./.buildkite/run-tests