diff --git a/pkgs/development/tools/dtools/default.nix b/pkgs/development/tools/dtools/default.nix
index 6a7c58f3417..5faf403e71a 100644
--- a/pkgs/development/tools/dtools/default.nix
+++ b/pkgs/development/tools/dtools/default.nix
@@ -14,7 +14,8 @@ stdenv.mkDerivation rec {
 
   patches = [
     (fetchpatch {
-      url = "https://github.com/dlang/tools/pull/441.patch"; # Fix LDC arm64 build
+      # part of https://github.com/dlang/tools/pull/441
+      url = "https://github.com/dlang/tools/commit/6c6a042d1b08e3ec1790bd07a7f69424625ee866.patch"; # Fix LDC arm64 build
       sha256 = "sha256-x6EclTYN1Y5FG57KLhbBK0BZicSYcZoWO7MTVcP4T18=";
     })
   ];