diff --git a/test/setup_vendor.sh b/test/setup_vendor.sh
index a7e9f08f3..66ea17f24 100755
--- a/test/setup_vendor.sh
+++ b/test/setup_vendor.sh
@@ -3,7 +3,7 @@
 set -ex
 
 ICINGAWEB_HOME=${ICINGAWEB_HOME:="$(dirname "$(readlink -f "$(dirname "$0")")")"}
-PHPCS_VERSION=${PHPCS_VERSION:=3.3.2}
+PHPCS_VERSION=${PHPCS_VERSION:=3.5.3}
 MOCKERY_VERSION=${MOCKERY_VERSION:=0.9.9}
 HAMCREST_VERSION=${HAMCREST_VERSION:=2.0.0}
 PHPUNIT_VERSION=${PHPUNIT_VERSION:=5.7}