diff --git a/.scrutinizer.yml b/.scrutinizer.yml
index 02ddd56..129b4e4 100644
--- a/.scrutinizer.yml
+++ b/.scrutinizer.yml
@@ -17,6 +17,7 @@ checks:
     fix_identation_4spaces: true
     fix_doc_comments: true
 tools:
+  external_code_coverage: true
   php_sim: true
   php_pdepend: true
   php_analyzer: true