diff --git a/tests/test-org-ql.el b/tests/test-org-ql.el
index 5f9463f..9008179 100644
--- a/tests/test-org-ql.el
+++ b/tests/test-org-ql.el
@@ -33,6 +33,8 @@
 (require 'org-ql-search)
 (require 'org-ql-view)
 
+(require 'xr)
+
 ;;;; Variables
 
 (defvar org-ql-test-buffer nil