diff --git a/doc/comedilib.ent b/doc/comedilib.ent
index 80e3e59..d49f8d3 100644
--- a/doc/comedilib.ent
+++ b/doc/comedilib.ent
@@ -1 +1,2 @@
 <!ENTITY comedi '<ulink url="http://www.comedi.org"><acronym>Comedi</acronym></ulink>'>
+<!ENTITY comedilib_version '0.10.0'>
diff --git a/doc/comedilib.xml b/doc/comedilib.xml
index c463439..279778f 100644
--- a/doc/comedilib.xml
+++ b/doc/comedilib.xml
@@ -10,7 +10,7 @@
 		<title>Comedi</title>
 		<subtitle>
 			The <emphasis>Control and Measurement Device Interface</emphasis>
-			handbook
+			handbook for Comedilib &comedilib_version;
 		</subtitle>
 		<author>
 			<firstname>David</firstname>