diff --git a/prefix-code.sh b/prefix-code.sh
index 1d087711e..fb3262ddd 100644
--- a/prefix-code.sh
+++ b/prefix-code.sh
@@ -23,19 +23,18 @@ note()
 # ---------------------------
 
 # 2. scope it
-note "Downloading php-scoper 0.17.5"
-# @todo upgrade to 0.18.1
-wget https://github.com/humbug/php-scoper/releases/download/0.17.5/php-scoper.phar -N --no-verbose
+note "Downloading php-scoper 0.18.11"
+wget https://github.com/humbug/php-scoper/releases/download/0.18.11/php-scoper.phar -N --no-verbose
 
 
 note "Running php-scoper"
 
 # Work around possible PHP memory limits
-php -d memory_limit=-1 php-scoper.phar add-prefix bin config src packages vendor composer.json --config scoper.php --force --ansi --output-dir scoped-code
+php -d memory_limit=-1 php-scoper.phar add-prefix bin src vendor composer.json --config scoper.php --force --ansi --output-dir scoped-code
 
 # the output code is in "/scoped-code", lets move it up
 # the local directories have to be empty to move easily
-rm -r bin config src vendor composer.json packages stubs
+rm -r bin src vendor composer.json stubs
 mv scoped-code/* .
 
 note "Dumping Composer Autoload"