diff --git a/drush-alias/testing/Dockerfile b/drush-alias/testing/Dockerfile
index 78595361..dbc1587e 100644
--- a/drush-alias/testing/Dockerfile
+++ b/drush-alias/testing/Dockerfile
@@ -1,4 +1,4 @@
-FROM drupaldocker/drush:8-alpine
+FROM drupaldocker/drush:9-alpine
 
 COPY local-dev/cli_id_rsa /root/.ssh/id_rsa