diff --git a/.gitignore b/.gitignore
index a96de97..29ba421 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@ composer.lock
 /node_modules/
 /dist/
 .idea
+tests-clover.xml
+tests-junit.xml
\ No newline at end of file
diff --git a/README.md b/README.md
index 339629c..d0f2059 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Statify Blacklist #
 * Contributors:      Stefan Kalscheuer
 * Requires at least: 4.4
-* Tested up to:      4.8
+* Tested up to:      4.9
 * Requires PHP:      5.5
 * Stable tag:        1.4.1
 * License:           GPLv2 or later
@@ -82,6 +82,9 @@ Because of this, an IP blacklist can only be applied while processing the reques
 
 ## Changelog ##
 
+### 1.4.2 / unreleased ###
+* Minor code fixes
+
 ### 1.4.1 / 16.07.2017 ###
 * Relicensed to GPLv2 or later
 * Fix filter hook if referer is disabled (#9)
diff --git a/composer.json b/composer.json
index afe93f9..78a8ade 100644
--- a/composer.json
+++ b/composer.json
@@ -24,6 +24,7 @@
   "require-dev": {
     "php": ">=5.5",
     "phpunit/phpunit": "*",
-    "wp-coding-standards/wpcs": "~0.11.0"
+    "phpunit/php-code-coverage": "*",
+    "wp-coding-standards/wpcs": "~0.14.0"
   }
 }
diff --git a/phpunit.xml b/phpunit.xml
index c0f5eba..4ea43f9 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -5,4 +5,13 @@
 			<directory suffix="-test.php">./test/</directory>
 		</testsuite>
 	</testsuites>
+	<filter>
+		<whitelist processUncoveredFilesFromWhitelist="true">
+			<directory suffix=".php">./inc/</directory>
+		</whitelist>
+	</filter>
+	<logging>
+		<log type="coverage-clover" target="tests-clover.xml"/>
+		<log type="junit" target="tests-junit.xml" logIncompleteSkipped="false"/>
+	</logging>
 </phpunit>