diff --git a/CHANGELOG.md b/CHANGELOG.md
index ebb55c3..003fbb8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 All notable changes to `phpunit-watcher` will be documented in this file
 
+## 1.9.1 - 2019-03-25
+
+- fix for deprecated symfony/process string construction
+
 ## 1.9.0 - 2019-03-25
 
 - add `hideManual` option
diff --git a/src/Screens/Phpunit.php b/src/Screens/Phpunit.php
index a906bbc..9f75e34 100644
--- a/src/Screens/Phpunit.php
+++ b/src/Screens/Phpunit.php
@@ -90,7 +90,7 @@ protected function writeHeader()
 
     protected function runTests()
     {
-        $result = (new Process("{$this->phpunitBinaryPath} {$this->phpunitArguments}"))
+        $result = (new Process(["{$this->phpunitBinaryPath} {$this->phpunitArguments}"]))
             ->setTty(true)
             ->run(function ($type, $line) {
                 echo $line;