diff --git a/lagoon/nginx.dockerfile b/lagoon/nginx.dockerfile
index 8374249..ba5773a 100644
--- a/lagoon/nginx.dockerfile
+++ b/lagoon/nginx.dockerfile
@@ -1,4 +1,4 @@
-ARG CLI_IMAGE
+ARG CLI_IMAGE=drupal-base-cli
 FROM ${CLI_IMAGE} AS cli
 
 FROM uselagoon/nginx-drupal:latest
diff --git a/lagoon/php.dockerfile b/lagoon/php.dockerfile
index c34ae8f..9137bfa 100644
--- a/lagoon/php.dockerfile
+++ b/lagoon/php.dockerfile
@@ -1,4 +1,4 @@
-ARG CLI_IMAGE
+ARG CLI_IMAGE=drupal-base-cli
 FROM ${CLI_IMAGE} AS cli
 
 FROM uselagoon/php-8.3-fpm:latest