diff --git a/Makefile b/Makefile
index 6e4ade34b6..75399235fb 100644
--- a/Makefile
+++ b/Makefile
@@ -76,7 +76,7 @@ test-stack-command-8x:
 	./scripts/test-stack-command.sh 8.19.0-8f4a33cc-SNAPSHOT
 
 test-stack-command-9x:
-	./scripts/test-stack-command.sh 9.1.0-b2179a15-SNAPSHOT
+	./scripts/test-stack-command.sh 9.1.0-a388efa6-SNAPSHOT
 
 test-stack-command-with-apm-server:
 	APM_SERVER_ENABLED=true ./scripts/test-stack-command.sh