diff --git a/.buildkite/pipeline.trigger.integration.tests.sh b/.buildkite/pipeline.trigger.integration.tests.sh
index cacf672dc7..9eddf754fd 100755
--- a/.buildkite/pipeline.trigger.integration.tests.sh
+++ b/.buildkite/pipeline.trigger.integration.tests.sh
@@ -20,6 +20,7 @@ STACK_COMMAND_TESTS=(
     test-stack-command-7x
     test-stack-command-86
     test-stack-command-8x
+    test-stack-command-9x
     test-stack-command-with-apm-server
 )
 
diff --git a/Makefile b/Makefile
index f10d28f0b0..7f9c24bfc3 100644
--- a/Makefile
+++ b/Makefile
@@ -75,13 +75,16 @@ test-stack-command-86:
 test-stack-command-8x:
 	./scripts/test-stack-command.sh 8.16.0-3a37a73c-SNAPSHOT
 
+test-stack-command-9x:
+	./scripts/test-stack-command.sh 9.0.0-SNAPSHOT
+
 test-stack-command-with-apm-server:
 	APM_SERVER_ENABLED=true ./scripts/test-stack-command.sh
 
 test-stack-command-with-self-monitor:
 	SELF_MONITOR_ENABLED=true ./scripts/test-stack-command.sh
 
-test-stack-command: test-stack-command-default test-stack-command-7x test-stack-command-800 test-stack-command-8x test-stack-command-with-apm-server
+test-stack-command: test-stack-command-default test-stack-command-7x test-stack-command-800 test-stack-command-8x test-stack-command-9x test-stack-command-with-apm-server
 
 test-check-packages: test-check-packages-with-kind test-check-packages-other test-check-packages-parallel test-check-packages-with-custom-agent test-check-packages-benchmarks test-check-packages-false-positives test-check-packages-with-logstash