diff --git a/.ci/phpstan.sh b/.ci/phpstan.sh
index 07d82b9107..d1328381ca 100755
--- a/.ci/phpstan.sh
+++ b/.ci/phpstan.sh
@@ -10,4 +10,5 @@ cd $FF_DIR
 
 echo "Changed back to '$FF_DIR'"
 
+composer install
 ./vendor/bin/phpstan analyse -c .ci/phpstan.neon