diff --git a/pkgs/tools/archivers/unshield/default.nix b/pkgs/tools/archivers/unshield/default.nix
index 34d2b860add2..95a66ed7e2db 100644
--- a/pkgs/tools/archivers/unshield/default.nix
+++ b/pkgs/tools/archivers/unshield/default.nix
@@ -1,10 +1,10 @@
 {stdenv, fetchurl, zlib}:
 
 stdenv.mkDerivation {
-  name = "unshield-0.5";
+  name = "unshield-0.5.1";
   src = fetchurl {
-    url = mirror://sourceforge/synce/unshield-0.5.tar.gz;
-    sha256 = "1apdj4qphf6m21lqj9l8sg8rpn85qkp5592w5np9xbhr8776cg3p";
+    url = mirror://sourceforge/synce/unshield-0.5.1.tar.gz;
+    sha256 = "0zc6kllw54m925zyh33jwjhk9c7rwcrkyydvhdsixr72fdqacjx3";
   };
   configureFlags = "--with-zlib=${zlib}";
 }