diff --git a/site-lisp/timeline-tools.el b/site-lisp/timeline-tools.el
index 5efc3f9..365bfd4 100644
--- a/site-lisp/timeline-tools.el
+++ b/site-lisp/timeline-tools.el
@@ -35,6 +35,7 @@
 (require 'dash)
 (require 'org)
 (require 'org-clock)
+(require 'org-id)
 
 
 ;; Customization