diff --git a/pkgs/development/tools/tradcpp/default.nix b/pkgs/development/tools/tradcpp/default.nix
index e5a3004bfdb6..3891617e1c79 100644
--- a/pkgs/development/tools/tradcpp/default.nix
+++ b/pkgs/development/tools/tradcpp/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl, autoconf }:
 
 stdenv.mkDerivation {
-  name = "tradcpp-0.4";
+  name = "tradcpp-0.5.2";
 
   src = fetchurl {
-    url = http://ftp.netbsd.org/pub/NetBSD/misc/dholland/tradcpp-0.4.tar.gz;
-    sha256 = "c60aa356945e0b6634bd449ead6a4fca0059d2ce3ae8044cf982140bbd54e688";
+    url = http://ftp.netbsd.org/pub/NetBSD/misc/dholland/tradcpp-0.5.2.tar.gz;
+    sha256 = "1h2bwxwc13rz3g2236l89hm47f72hn3m4h7wjir3j532kq0m68bc";
   };
 
   # tradcpp only comes with BSD-make Makefile; the patch adds configure support