diff --git a/pkgs/by-name/to/tomlcpp/package.nix b/pkgs/by-name/to/tomlcpp/package.nix
index f782719f2b637..244b389a2a81c 100644
--- a/pkgs/by-name/to/tomlcpp/package.nix
+++ b/pkgs/by-name/to/tomlcpp/package.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub }:
+{ lib, stdenv, fetchFromGitHub, fetchpatch }:
 
 stdenv.mkDerivation rec {
   pname = "tomlcpp";
@@ -11,6 +11,15 @@ stdenv.mkDerivation rec {
     hash = "sha256-PM3gURXhyTZr59BWuLHvltjKOlKUSBT9/rqTeX5V//k=";
   };
 
+  patches = [
+    (fetchpatch {
+      # Use implicit $AR variable in Makefile
+      # https://github.com/cktan/tomlcpp/pull/6
+      url = "https://github.com/cktan/tomlcpp/commit/abdb4e0db8b27f719434f5a0d6ec0b1a6b086ded.patch";
+      hash = "sha256-SurUKdAZNWqBC7ss5nv5mDnJyC3DqxG/Q/FweTrkLnk=";
+    })
+  ];
+
   dontConfigure = true;
 
   installFlags = [