diff --git a/builder/scripts/mkimage-phan.bash b/builder/scripts/mkimage-phan.bash
index 38967a4..427cbb0 100755
--- a/builder/scripts/mkimage-phan.bash
+++ b/builder/scripts/mkimage-phan.bash
@@ -56,6 +56,7 @@ build() {
 
     php7 /usr/local/bin/composer.phar --prefer-dist --no-dev --ignore-platform-reqs --no-interaction install
     rm -rf .git
+    rm -rf tests vendor/symfony/console/Tests vendor/symfony/debug/Tests ./vendor/symfony/debug/Resources/ext/tests
   } >&2
 
   # install php-ast