diff --git a/.drone.yml b/.drone.yml
index 8eed7af6b4..b71a3ca979 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -119,6 +119,7 @@ steps:
       REDIS_HOST: "redis"
       MEMCACHED_HOST: "memcached"
       MEMCACHE_HOST: "memcached"
+      XDEBUG_MODE: "coverage"
     commands:
       - phpenmod xdebug
       - composer validate