diff --git a/src/Handler.php b/src/Handler.php
index 28ea2d007c7b4e80582e90397762b73c0ada26ed..c546f3d539007fe1eba596d45b1079b787ba2882 100644
--- a/src/Handler.php
+++ b/src/Handler.php
@@ -297,6 +297,7 @@ class Handler extends BaseHandler {
       $options['projectroot'] = $projectRoot;
 
       $this->options = $env->replaceEnvironmentVariables($options);
+      $env->put('PHP_VERSION', $this->options['php']['version'], TRUE);
     }
     if ($key !== NULL) {
       return $this->options[$key];