diff --git a/travis/setup-php-extensions.sh b/travis/setup-php-extensions.sh
index ebfe62839c..86e3aaae47 100755
--- a/travis/setup-php-extensions.sh
+++ b/travis/setup-php-extensions.sh
@@ -37,8 +37,8 @@ function install_php_extension
 
 php_ini_file=$(find_php_ini)
 
-# disable broken opcache on PHP 5.5.7
-if [ `php -r "echo (int) version_compare(PHP_VERSION, '5.5.8', '<');"` == "1" ]
+# disable broken opcache on PHP 5.5.7 and 5.5.8
+if [ `php -r "echo (int) version_compare(PHP_VERSION, '5.5.9', '<');"` == "1" ]
 then
 	sed -i '/opcache.so/d' "$php_ini_file"
 fi