diff --git a/pkgs/development/libraries/librsvg/default.nix b/pkgs/development/libraries/librsvg/default.nix
index 78f83a9a9d0f..4be391239d5e 100644
--- a/pkgs/development/libraries/librsvg/default.nix
+++ b/pkgs/development/libraries/librsvg/default.nix
@@ -209,7 +209,7 @@ stdenv.mkDerivation (finalAttrs: {
                   nix
                 ]
               }
-              update-source-version librsvg --ignore-same-version --source-key=cargoDeps > /dev/null
+              update-source-version librsvg --ignore-same-version --source-key=cargoDeps.vendorStaging > /dev/null
             ''
           ];
           # Experimental feature: do not copy!