diff --git a/app/Http/Middleware/StartupCheck.php b/app/Http/Middleware/StartupCheck.php
index dc9f9420f973..14344e10e956 100644
--- a/app/Http/Middleware/StartupCheck.php
+++ b/app/Http/Middleware/StartupCheck.php
@@ -48,6 +48,9 @@ class StartupCheck
             $file = storage_path() . '/version.txt';
             $version = @file_get_contents($file);
             if ($version != NINJA_VERSION) {
+                if (version_compare(phpversion(), '5.5.9', '<')) {
+                    dd('Please update PHP to >= 5.5.9');
+                }
                 $handle = fopen($file, 'w');
                 fwrite($handle, NINJA_VERSION);
                 fclose($handle);
diff --git a/resources/views/setup.blade.php b/resources/views/setup.blade.php
index aad74d2015ad..650fc3089187 100644
--- a/resources/views/setup.blade.php
+++ b/resources/views/setup.blade.php
@@ -26,8 +26,8 @@
 
     <div class="jumbotron">
         <h2>Invoice Ninja Setup</h2>
-        @if (version_compare(phpversion(), '5.4.0', '<'))
-            <div class="alert alert-warning">Warning: The application requires PHP >= 5.4.0</div>
+        @if (version_compare(phpversion(), '5.5.9', '<'))
+            <div class="alert alert-warning">Warning: The application requires PHP >= 5.5.9</div>
         @endif
         @if (!function_exists('proc_open'))
             <div class="alert alert-warning">Warning: <a href="http://php.net/manual/en/function.proc-open.php" target="_blank">proc_open</a> must be enabled.</div>