diff --git a/pkgs/development/libraries/qt-4/default.nix b/pkgs/development/libraries/qt-4/default.nix
index b19d0506056b..8224bd910a00 100644
--- a/pkgs/development/libraries/qt-4/default.nix
+++ b/pkgs/development/libraries/qt-4/default.nix
@@ -1,7 +1,7 @@
 args: with args;
 
 stdenv.mkDerivation {
-  name = "qt-4.5.0";
+  name = "qt-4.5.1";
   
   src = fetchurl {
     url = ftp://ftp.trolltech.com/qt/source/qt-x11-opensource-src-4.5.1.tar.bz2;