diff --git a/.travis.yml b/.travis.yml
index c920e8e..c4e5673 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -41,11 +41,12 @@ install:
   - composer validate
   - if [ -z "$dropPlatform" ]; then composer config --unset platform.php; fi;
   - if [ -z "$dropPlatform" ]; then composer update --lock; fi;
-  - if [ -z "$qaExtended" ]; then phpenv config-rm xdebug.ini || :; fi;
+  - if [ -z "$qaExtended" ]; then phpenv config-rm xdebug.ini || echo 'No xdebug config.'; fi;
   - if [ -z "$dependencies" ]; then composer install --prefer-dist; fi;
   - if [ "$dependencies" = "lowest" ]; then composer update --prefer-lowest --prefer-dist -n; fi;
   - if [ "$dependencies" = "highest" ]; then composer update --prefer-dist -n; fi;
   - composer show
+  - env
 
 ## Run the actual test
 script:
diff --git a/composer.json b/composer.json
index 912716a..a66dc80 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,10 @@
   "autoload-dev": {
     "psr-4": {
       "ApiClients\\Tests\\Tools\\TestUtilities\\": "tests/"
-    }
+    },
+    "files": [
+      "tests/bootstrap.php"
+    ]
   },
   "scripts": {
     "post-update-cmd": [
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
new file mode 100644
index 0000000..1ad6524
--- /dev/null
+++ b/tests/bootstrap.php
@@ -0,0 +1,11 @@
+<?php
+
+if (function_exists('xdebug_set_filter')) {
+    xdebug_set_filter(
+        XDEBUG_FILTER_CODE_COVERAGE,
+        XDEBUG_PATH_WHITELIST,
+        [
+            dirname(__DIR__) . DIRECTORY_SEPARATOR . 'src',
+        ]
+    );
+}