diff --git a/pkgs/servers/monitoring/nagios/default.nix b/pkgs/servers/monitoring/nagios/default.nix
index bf43a93a81b2..c4d60cabaa39 100644
--- a/pkgs/servers/monitoring/nagios/default.nix
+++ b/pkgs/servers/monitoring/nagios/default.nix
@@ -1,16 +1,16 @@
-{ stdenv, fetchurl, perl, php, gd, libpng, zlib }:
+{ stdenv, fetchurl, perl, php, gd, libpng, zlib, unzip }:
 
 stdenv.mkDerivation rec {
   name = "nagios-${version}";
-  version = "4.0.8";
+  version = "4.2.3";
 
   src = fetchurl {
     url = "mirror://sourceforge/nagios/nagios-4.x/${name}/${name}.tar.gz";
-    sha256 = "0jyad39wa318613awlnpczrrakvjcipz8qp1mdsig1cp1hjqs9lb";
+    sha256 = "0p16sm5pkbzf4py30hwzm38194cl23wfzsvkhk4jkf3p1fq7xvl3";
   };
 
   patches = [ ./nagios.patch ];
-  buildInputs = [ php perl gd libpng zlib ];
+  buildInputs = [ php perl gd libpng zlib unzip ];
 
   configureFlags = [ "--localstatedir=/var/lib/nagios" ];
   buildFlags = "all";