diff --git a/pkgs/tools/text/gnugrep/default.nix b/pkgs/tools/text/gnugrep/default.nix
index 87c8fdfd8903..7608587e3c27 100644
--- a/pkgs/tools/text/gnugrep/default.nix
+++ b/pkgs/tools/text/gnugrep/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchurl, pcre, libiconv, perl }:
 
-let version = "3.3"; in
+let version = "3.4"; in
 
 stdenv.mkDerivation {
   pname = "gnugrep";
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
 
   src = fetchurl {
     url = "mirror://gnu/grep/grep-${version}.tar.xz";
-    sha256 = "055mqp6vrd0brkygmygb2673qwz409a7kyp1mzbfy6cn94f58q5r";
+    sha256 = "1yy33kiwrxrwj2nxa4fg15bvmwyghqbs8qwkdvy5phm784f7brjq";
   };
 
   # Perl is needed for testing