diff --git a/site-lisp/doty-tools-utils.el b/site-lisp/doty-tools-utils.el
index 4c3eaad..972c3b9 100644
--- a/site-lisp/doty-tools-utils.el
+++ b/site-lisp/doty-tools-utils.el
@@ -31,6 +31,7 @@
 ;; These are just helper functions that support the rest of Doty's tools.
 
 ;;; Code:
+(require 'ert)
 (require 'dash)
 (require 'gptel)