diff --git a/pkgs/tools/video/rav1e/default.nix b/pkgs/tools/video/rav1e/default.nix
index ae7a45b562d9..1951afd7ab92 100644
--- a/pkgs/tools/video/rav1e/default.nix
+++ b/pkgs/tools/video/rav1e/default.nix
@@ -1,18 +1,32 @@
-{ rustPlatform, fetchFromGitHub, lib, nasm, cargo-c }:
+{ stdenv, rustPlatform, fetchurl, fetchFromGitHub, lib, nasm, cargo-c }:
 
 rustPlatform.buildRustPackage rec {
   pname = "rav1e";
-  version = "0.3.4";
+  version = "0.4.0-alpha";
 
-  src = fetchFromGitHub {
-    owner = "xiph";
-    repo = "rav1e";
-    rev = "v${version}";
-    sha256 = "0zwjg0sv504i1ahzfy2jgng6qwmyvcrvdrp4n3s90r4kvwjkv8xs";
+  src = stdenv.mkDerivation rec {
+    name = "${pname}-${version}-source";
+
+    src = fetchFromGitHub {
+      owner = "xiph";
+      repo = "rav1e";
+      rev = "v${version}";
+      sha256 = "1fw1gxi8330kfhl9hfzpn0lcmyn5604lc74d6g6iadzz2hmv4mb9";
+    };
+
+    cargoLock = fetchurl {
+      url = "https://github.com/xiph/rav1e/releases/download/v0.4.0-alpha/Cargo.lock";
+      sha256 = "002s2wlzpifn5p2ahdrjdkjl48c1wr6fslg0if4gf9qpl8qj05fl";
+    };
+
+    installPhase = ''
+      mkdir -p $out
+      cp -r ./* $out/
+      cp ${cargoLock} $out/Cargo.lock
+    '';
   };
 
-  cargoSha256 = "1mfzshcbxky27nskxhcyrj99wd3v5f597ymgv7nb67lzp5lsyb24";
-
+  cargoSha256 = "1i5ldqb77rrhfxxf9krp7f6yj3h6rsqak6hf23fd2znhgmi7psb1";
   nativeBuildInputs = [ nasm cargo-c ];
 
   postBuild = ''