diff --git a/pkgs/development/misc/resholve/resholve-package.nix b/pkgs/development/misc/resholve/resholve-package.nix
index 836d2df34604..89852efb8bac 100644
--- a/pkgs/development/misc/resholve/resholve-package.nix
+++ b/pkgs/development/misc/resholve/resholve-package.nix
@@ -13,7 +13,7 @@ let
   self = (stdenv.mkDerivation ((removeAttrs attrs [ "solutions" ])
     // {
     inherit pname version src;
-    buildInputs = [ resholve ];
+    buildInputs = (lib.optionals (builtins.hasAttr "buildInputs" attrs) attrs.buildInputs) ++ [ resholve ];
 
     # enable below for verbose debug info if needed
     # supports default python.logging levels
diff --git a/pkgs/development/misc/resholve/source.nix b/pkgs/development/misc/resholve/source.nix
index c7238714d112..5633e90f4bb0 100644
--- a/pkgs/development/misc/resholve/source.nix
+++ b/pkgs/development/misc/resholve/source.nix
@@ -3,7 +3,7 @@
 }:
 
 rec {
-  version = "0.6.5";
+  version = "0.6.6";
   rSrc =
     # local build -> `make ci`; `make clean` to restore
     # return to remote source
@@ -14,6 +14,6 @@ rec {
         owner = "abathur";
         repo = "resholve";
         rev = "v${version}";
-        hash = "sha256-4fTACLDsHxVGYMOm08wQs4gFWMu8kv0O12IyOZSROqw=";
+        hash = "sha256-bupf3c9tNPAEMzFEDcvg483bSiwZFuB3ZqveG89dgkE=";
       };
 }