diff --git a/pkgs/by-name/ra/rattler-build/package.nix b/pkgs/by-name/ra/rattler-build/package.nix
index 60a2dddaddd9..aa7a1f65b4e6 100644
--- a/pkgs/by-name/ra/rattler-build/package.nix
+++ b/pkgs/by-name/ra/rattler-build/package.nix
@@ -14,17 +14,17 @@
 
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "rattler-build";
-  version = "0.41.0";
+  version = "0.42.1";
 
   src = fetchFromGitHub {
     owner = "prefix-dev";
     repo = "rattler-build";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-6N4YHrwzFTBShitAW7BMjEMzigB37Om5lICb94wEvlQ=";
+    hash = "sha256-HeqE4FqkRBQNtJlirkLo6aVBo4S6QpKD8o6/B2DEya8=";
   };
 
   useFetchCargoVendor = true;
-  cargoHash = "sha256-fslC+e3d2tVFOWag7NZ1mTnjG3iMMezodpNQ+2LVRxU=";
+  cargoHash = "sha256-/R4m3uApdFHJe2fJbdox2awO0Qbt496C1gTz7B0Owso=";
 
   doCheck = false; # test requires network access