diff --git a/pkgs/servers/dns/nsd/default.nix b/pkgs/servers/dns/nsd/default.nix
index 8c0fc737766..4b86ccbdfe6 100644
--- a/pkgs/servers/dns/nsd/default.nix
+++ b/pkgs/servers/dns/nsd/default.nix
@@ -15,11 +15,11 @@
 }:
 
 stdenv.mkDerivation rec {
-  name = "nsd-4.1.26";
+  name = "nsd-4.1.27";
 
   src = fetchurl {
     url = "https://www.nlnetlabs.nl/downloads/nsd/${name}.tar.gz";
-    sha256 = "1x0mvj4872dzj1rr9adnchdm4dhn41xmc459p5j4s0r13m1l32lz";
+    sha256 = "1sjfbwr4vq25304hr9vmd9j821g2vzv8lpy95hpsravc80q5zaqv";
   };
 
   prePatch = ''