diff --git a/composer.json b/composer.json
index 16049d6..c7ad095 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
 	},
 	"require": {
 		"johnbillion/query-monitor": "^3.5.2",
-		"altis/dev-tools-command": "^0.3.0",
+		"altis/dev-tools-command": "^0.3.3",
 		"wp-phpunit/wp-phpunit": "5.3.1",
 		"phpunit/phpunit": "^7.1.4"
 	},
diff --git a/travis/altis.yml b/travis/altis.yml
index b9ee273..4a6f422 100644
--- a/travis/altis.yml
+++ b/travis/altis.yml
@@ -31,10 +31,6 @@ matrix:
   include:
     - php: 7.2
 
-# Ensure composer v1 is still used.
-before_install:
-  - composer self-update --1
-
 # Install application and start the local server
 before_script:
   - composer install