diff --git a/org-ql.el b/org-ql.el
index 4f88e2d..f80b39a 100644
--- a/org-ql.el
+++ b/org-ql.el
@@ -42,6 +42,7 @@
 
 (require 'dash)
 (require 'dash-functional)
+(require 'map)
 (require 'ts)
 
 ;;;; Compatibility