diff --git a/pkgs/by-name/ca/cargo-workspaces/package.nix b/pkgs/by-name/ca/cargo-workspaces/package.nix
index 1a0330e8d9e0..7f49d775f7e0 100644
--- a/pkgs/by-name/ca/cargo-workspaces/package.nix
+++ b/pkgs/by-name/ca/cargo-workspaces/package.nix
@@ -10,15 +10,15 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "cargo-workspaces";
-  version = "0.3.6";
+  version = "0.4.0";
 
   src = fetchCrate {
     inherit pname version;
-    hash = "sha256-JqLKFVM/EnVAPF7erINpHdaaDG+g2nbB0iE/hB1gml8=";
+    hash = "sha256-kBjiRPEWHKhX6vTB48TjKYhlpaiieNzE1l0PjaLTL4k=";
   };
 
   useFetchCargoVendor = true;
-  cargoHash = "sha256-EfTcbgvOQ2KgUpu4+QBUVTaz/ToH9FuMHlXMpJN1BK4=";
+  cargoHash = "sha256-vHLc738wFunyUDu6/B5foTE2/wExd2Yxcl638iqOWdw=";
 
   nativeBuildInputs = [
     pkg-config