diff --git a/pkgs/applications/misc/gnuradio/default.nix b/pkgs/applications/misc/gnuradio/default.nix
index e7817dc5b52..ab02238606a 100644
--- a/pkgs/applications/misc/gnuradio/default.nix
+++ b/pkgs/applications/misc/gnuradio/default.nix
@@ -23,11 +23,11 @@
 
 stdenv.mkDerivation rec {
   name = "gnuradio-${version}";
-  version = "3.7.8";
+  version = "3.7.8.1";
 
   src = fetchurl {
     url = "http://gnuradio.org/releases/gnuradio/${name}.tar.gz";
-    sha256 = "0wj1rp8fdrmsfqbcaicvfxk71vkd9hcczmb1vrnvfzypnmacn6gy";
+    sha256 = "1ap5gbgisnbny3jbnm2i5wm2sy6qkbhz747av3sjxp2z12fz81l4";
   };
 
   buildInputs = [