diff --git a/gtkwave.spec b/gtkwave.spec
index b24140e..409db18 100644
--- a/gtkwave.spec
+++ b/gtkwave.spec
@@ -5,7 +5,7 @@
 
 Summary:	Waveform Viewer
 Name:		gtkwave
-Version:	3.3.39
+Version:	3.3.40
 Release:	%{?prerel:0.}1%{?prerel:.%{prerel}}%{?dist}
 License:	GPLv2+
 Group:		Applications/Engineering
@@ -189,6 +189,13 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 %{_mandir}/man5/gtkwaverc.5*
 
 %changelog
+* Wed Sep 12 2012 Paul Howarth <paul@city-fan.org> 3.3.40-1
+- update to 3.3.40
+  - fixed y-size of splash screen on MinGW with newest version of GTK2 (as it
+    could be verified on that version)
+  - fixed off-by-one buffer string allocation write overflow in calloc_2()
+    call in maketraces()
+
 * Fri Aug 10 2012 Paul Howarth <paul@city-fan.org> 3.3.39-1
 - update to 3.3.39
   - fixed relative pathnames when generated in MinGW and used back on Linux
diff --git a/sources b/sources
index f38f112..499620b 100644
--- a/sources
+++ b/sources
@@ -1,4 +1,4 @@
-2569d1cf88d7f9f93ef7e6234965d9c5  gtkwave-3.3.39.tar.gz
+f7b4cd0d056084f6725173b7f939152c  gtkwave-3.3.40.tar.gz
 2cc7754492918591242bc38a0b11d2a5  gtkwave-16.png
 410c50539074403d3a3240f7c9209b11  gtkwave-32.png
 4fdb2fec2b6d9732e2f111c6cd63b788  gtkwave-48.png