diff --git a/composer.json b/composer.json
index 7e3ff0e..dc42341 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
 	},
 	"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": "5.5.1",
 		"phpunit/phpunit": "^7.1.4"
 	},
diff --git a/travis/altis.yml b/travis/altis.yml
index f1afbce..25fdb41 100644
--- a/travis/altis.yml
+++ b/travis/altis.yml
@@ -36,8 +36,6 @@ cache:
 before_install:
   - nvm install v12
   - nvm use v12
-  # Ensure composer v1 is still used.
-  - composer self-update --1
 
 # Install application and start the local server
 before_script: