diff --git a/cargo_config b/cargo_config
new file mode 100644
index 0000000..97852b5
--- /dev/null
+++ b/cargo_config
@@ -0,0 +1,5 @@
+[source.crates-io]
+replace-with = "vendored-sources"
+
+[source.vendored-sources]
+directory = "vendor"
diff --git a/rusty_v8.spec b/rusty_v8.spec
index e5f0b7b..1dc3938 100644
--- a/rusty_v8.spec
+++ b/rusty_v8.spec
@@ -25,6 +25,8 @@ Group:          Productivity/Other
 URL:            https://github.com/denoland/rusty_v8
 Source0:        %{name}-%{version}.tar.xz
 Source1:        vendor.tar.xz
+Source2:        cargo_config
+BuildRequires:  cargo-packaging
 BuildRequires:  clang
 BuildRequires:  gn
 BuildRequires:  lld
@@ -32,7 +34,6 @@ BuildRequires:  llvm
 BuildRequires:  ninja
 BuildRequires:  pkgconfig
 BuildRequires:  python3-base
-BuildRequires:  rust-packaging
 BuildRequires:  pkgconfig(glib-2.0)
 BuildRequires:  pkgconfig(gmodule-2.0)
 BuildRequires:  pkgconfig(gobject-2.0)
@@ -48,8 +49,8 @@ Chromium, etc.
 
 %prep
 %autosetup -a1 -p1
-%define cargo_registry $(pwd)/vendor
-%{cargo_prep}
+mkdir -p .cargo
+cp %{SOURCE2} .cargo/config
 
 %build
 #https://github.com/denoland/rusty_v8/#build-v8-from-source