diff --git a/pkgs/applications/altcoins/namecoin.nix b/pkgs/applications/altcoins/namecoin.nix
index 83bead0adac..f7349581169 100644
--- a/pkgs/applications/altcoins/namecoin.nix
+++ b/pkgs/applications/altcoins/namecoin.nix
@@ -3,14 +3,14 @@
 
 with stdenv.lib;
 stdenv.mkDerivation rec {
-  version = "nc0.13.0rc1";
+  version = "nc0.15.99-name-tab-beta2";
   name = "namecoin" + toString (optional (!withGui) "d") + "-" + version;
 
   src = fetchFromGitHub {
     owner = "namecoin";
     repo = "namecoin-core";
     rev = version;
-    sha256 = "17zz0rm3js285w2assxp8blfx830rs0ambcsaqqfli9mnaik3m39";
+    sha256 = "1r0v0yvlazmidxp6xhapbdawqb8fhzrdp11d4an5vgxa208s6wdf";
   };
 
   nativeBuildInputs = [