diff --git a/lisp/org-element-ast.el b/lisp/org-element-ast.el
index 6b98709d2..ece58aea9 100644
--- a/lisp/org-element-ast.el
+++ b/lisp/org-element-ast.el
@@ -205,6 +205,7 @@
 
 (require 'org-macs)
 (require 'inline) ; load indentation rules
+(require 'subr-x) ;; FIXME: Required for Emacs 27
 
 ;;;; Syntax node type