diff --git a/README.md b/README.md
index 43dcb61bc..41e253487 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ PHP 5.6 is required but using the latest version of PHP is highly recommended
 
 ### PHP 5
 
-[Xdebug](http://xdebug.org/) is the only source of raw code coverage data supported for PHP 5. Version 2.1.3 of Xdebug is required but using the latest version is highly recommended.
+[Xdebug](http://xdebug.org/) is the only source of raw code coverage data supported for PHP 5. Version 2.2.1 of Xdebug is required but using the latest version is highly recommended.
 
 ### PHP 7
 
diff --git a/src/CodeCoverage/Driver/Xdebug.php b/src/CodeCoverage/Driver/Xdebug.php
index 5cbb0d03d..483c5b2e3 100644
--- a/src/CodeCoverage/Driver/Xdebug.php
+++ b/src/CodeCoverage/Driver/Xdebug.php
@@ -25,7 +25,7 @@ public function __construct()
             throw new PHP_CodeCoverage_RuntimeException('This driver requires Xdebug');
         }
 
-        if (version_compare(phpversion('xdebug'), '2.2.0-dev', '>=') &&
+        if (version_compare(phpversion('xdebug'), '2.2.1', '>=') &&
             !ini_get('xdebug.coverage_enable')) {
             throw new PHP_CodeCoverage_RuntimeException(
                 'xdebug.coverage_enable=On has to be set in php.ini'