diff --git a/chapter08/tcl.xml b/chapter08/tcl.xml
index 71ddf63b7..70e231013 100644
--- a/chapter08/tcl.xml
+++ b/chapter08/tcl.xml
@@ -3,8 +3,8 @@
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
   <!ENTITY % general-entities SYSTEM "../general.ent">
   %general-entities;
-  <!ENTITY tdbc-ver          "1.1.1">
-  <!ENTITY itcl-ver          "4.2.0">
+  <!ENTITY tdbc-ver          "1.1.2">
+  <!ENTITY itcl-ver          "4.2.1">
 ]>
 
 <sect1 id="ch-tools-tcl" role="wrap">