diff --git a/composer.json b/composer.json
index 587c2726..ca135714 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "wp-cli/wp-cli": "^2.12"
+        "wp-cli/wp-cli": "^2.13"
     },
     "require-dev": {
         "wp-cli/extension-command": "^1.2 || ^2",
diff --git a/src/Scaffold_Command.php b/src/Scaffold_Command.php
index 424c1e02..d1d6c30c 100644
--- a/src/Scaffold_Command.php
+++ b/src/Scaffold_Command.php
@@ -1211,7 +1211,7 @@ private static function canonicalize_path( $path ) {
 	/**
 	 * Gets an active theme's name when true provided or the same name otherwise.
 	 *
-	 * @param string|bool $theme Theme name or true.
+	 * @param string|true $theme Theme name or true.
 	 * @return string
 	 */
 	private function get_theme_name( $theme ) {