diff --git a/pkgs/servers/dns/knot-resolver/default.nix b/pkgs/servers/dns/knot-resolver/default.nix
index 24960eb65eff..bc9e35f88c4b 100644
--- a/pkgs/servers/dns/knot-resolver/default.nix
+++ b/pkgs/servers/dns/knot-resolver/default.nix
@@ -10,11 +10,11 @@ let
 in
 stdenv.mkDerivation rec {
   name = "knot-resolver-${version}";
-  version = "1.2.3";
+  version = "1.2.4";
 
   src = fetchurl {
     url = "http://secure.nic.cz/files/knot-resolver/${name}.tar.xz";
-    sha256 = "81a773f182112b4e11935223f900cfbcca8624f2c382b1e39a68d7c3db81c921";
+    sha256 = "630b2ad0bfdcf59164957a377adef8b1fddc37a58a7e1d10e76a1b497a30f036";
   };
 
   outputs = [ "out" "dev" ];