diff --git a/pkgs/by-name/pi/pika-backup/package.nix b/pkgs/by-name/pi/pika-backup/package.nix
index 0a2da631d60c..3d3bc9710089 100644
--- a/pkgs/by-name/pi/pika-backup/package.nix
+++ b/pkgs/by-name/pi/pika-backup/package.nix
@@ -32,10 +32,9 @@ stdenv.mkDerivation rec {
     hash = "sha256-DtLGD7+Ydj2fvEHU+bDQDMC/E/9VgrlVNMCG6OlPmfg=";
   };
 
-  cargoDeps = rustPlatform.fetchCargoTarball {
-    inherit src;
-    name = "${pname}-${version}";
-    hash = "sha256-8nFkc77FiLxMA1hMm8k5VB84l+pQeL0JSzYDytXrNUE=";
+  cargoDeps = rustPlatform.fetchCargoVendor {
+    inherit pname version src;
+    hash = "sha256-1JFXSVs9HPPzh+IjH4RGugrZEifPVcQho9B3hLSTL6s=";
   };
 
   patches = [