diff --git a/pkgs/tools/networking/httping/default.nix b/pkgs/tools/networking/httping/default.nix
index 195f739aa5a..5a3b8e76c27 100644
--- a/pkgs/tools/networking/httping/default.nix
+++ b/pkgs/tools/networking/httping/default.nix
@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 , fftw ? null
 , gettext
 , libintl
@@ -19,6 +20,16 @@ stdenv.mkDerivation rec {
     hash = "sha256-aExTXXtW03UKMuMjTMx1k/MUpcRMh1PdSPkDGH+Od70=";
   };
 
+  patches = [
+    # Pull upstream fix for missing <unistd.h>
+    #   https://github.com/folkertvanheusden/HTTPing/pull/8
+    (fetchpatch {
+      name = "add-unistd.patch";
+      url = "https://github.com/folkertvanheusden/HTTPing/commit/aad3c275686344fe9a235faeac4ee3832f3aa8d5.patch";
+      hash = "sha256-bz3AMQTSfSTwUyf9WbkAFWVmFo06ei+Qd55x+RRDREY=";
+    })
+  ];
+
   nativeBuildInputs = [
     gettext
   ];