diff --git a/pkgs/by-name/pr/proton-caller/package.nix b/pkgs/by-name/pr/proton-caller/package.nix
index 354181609e1a..d34045ad47da 100644
--- a/pkgs/by-name/pr/proton-caller/package.nix
+++ b/pkgs/by-name/pr/proton-caller/package.nix
@@ -15,7 +15,8 @@ rustPlatform.buildRustPackage rec {
     sha256 = "sha256-srzahBMihkEP9/+7oRij5POHkCcH6QBh4kGz42Pz0nM=";
   };
 
-  cargoHash = "sha256-LBXCcFqqscCGgtTzt/gr7Lz0ExT9kAWrXPuPuKzKt0E=";
+  useFetchCargoVendor = true;
+  cargoHash = "sha256-AZp6Mbm9Fg+EVr31oJe6/Z8LIwapYhos8JpZzPMiwz0=";
 
   meta = with lib; {
     description = "Run Windows programs with Proton";