diff --git a/doc/Makefile b/doc/Makefile
index 616ea15..d131723 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -1,4 +1,4 @@
-all: lookup.html
+all: lookup.html parsing.html
 
 %.html: %.rst voidspace.css
 	rst2html --stylesheet-path=voidspace.css --no-compact-lists $< > $@