diff --git a/pkgs/tools/networking/dhcp/default.nix b/pkgs/tools/networking/dhcp/default.nix
index 08b3543c5c04..5d71f9641fd9 100644
--- a/pkgs/tools/networking/dhcp/default.nix
+++ b/pkgs/tools/networking/dhcp/default.nix
@@ -5,11 +5,11 @@
 
 stdenv.mkDerivation rec {
   pname = "dhcp";
-  version = "4.4.2";
+  version = "4.4.2-P1";
 
   src = fetchurl {
     url = "https://ftp.isc.org/isc/dhcp/${version}/${pname}-${version}.tar.gz";
-    sha256 = "08a5003zdxgl41b29zjkxa92h2i40zyjgxg0npvnhpkfl5jcsz0s";
+    sha256 = "06jsr0cg5rsmyibshrpcb9za0qgwvqccashdma7mlm1rflrh8pmh";
   };
 
   patches =