diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 483c46e..cd3dbca 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt*	For Vim version 9.0.  Last change: 2022 Nov 15
+*syntax.txt*	For Vim version 9.0.  Last change: 2022 Nov 24
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -3621,6 +3621,14 @@
 <
 
 
+WDL							*wdl.vim* *wdl-syntax*
+
+The Workflow Description Language is a way to specify data processing workflows
+with a human-readable and writeable syntax.  This is used a lot in
+bioinformatics.  More info on the spec can be found here:
+https://github.com/openwdl/wdl
+
+
 XF86CONFIG				*xf86conf.vim* *ft-xf86conf-syntax*
 
 The syntax of XF86Config file differs in XFree86 v3.x and v4.x.  Both