diff --git a/pkgs/tools/archivers/atool/default.nix b/pkgs/tools/archivers/atool/default.nix
index d376f75a552..e0ece8825c0 100644
--- a/pkgs/tools/archivers/atool/default.nix
+++ b/pkgs/tools/archivers/atool/default.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchurl, perl}:
 
 stdenv.mkDerivation rec {
-  name = "atool-0.39";
+  name = "atool-0.39.0";
   src = fetchurl {
     url = http://savannah.nongnu.org/download/atool/atool-0.39.0.tar.gz;
     sha256 = "aaf60095884abb872e25f8e919a8a63d0dabaeca46faeba87d12812d6efc703b";