diff --git a/pkgs/development/tools/rust/cargo-guppy/default.nix b/pkgs/development/tools/rust/cargo-guppy/default.nix
index 479c5d6cef7c..e484f930c1eb 100644
--- a/pkgs/development/tools/rust/cargo-guppy/default.nix
+++ b/pkgs/development/tools/rust/cargo-guppy/default.nix
@@ -9,16 +9,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "cargo-guppy";
-  version = "unstable-2022-12-05";
+  version = "unstable-2023-01-08";
 
   src = fetchFromGitHub {
     owner = "guppy-rs";
     repo = "guppy";
-    rev = "4dad33053d3047293da35ade33158b709fe8bb23";
-    sha256 = "sha256-CWyXNBBo+yyF2s6BT6FFu6CI7xId38vsyg0uSezsusc=";
+    rev = "81753212702ca2b11b65ac8b98db6c9e4f4d278f";
+    sha256 = "sha256-fCZlnE+/U+Z+X9n6x6qWHxODH5ESV0cM+hwxeyUZs6c=";
   };
 
-  cargoSha256 = "sha256-jwfZ5FH2qlzmxKT9LTXkmvwL5fhKljUPYwYXXqDRDXc=";
+  cargoSha256 = "sha256-H2voc37Ywmi8oy15UY9J3hW6sbqc3RZuelxWJxrwZKg=";
 
   nativeBuildInputs = [ pkg-config ];
 
diff --git a/pkgs/development/tools/rust/cargo-hakari/default.nix b/pkgs/development/tools/rust/cargo-hakari/default.nix
index c596e61586c4..c8d3f360da29 100644
--- a/pkgs/development/tools/rust/cargo-hakari/default.nix
+++ b/pkgs/development/tools/rust/cargo-hakari/default.nix
@@ -1,15 +1,20 @@
-{ lib, rustPlatform, fetchCrate }:
+{ lib, rustPlatform, fetchFromGitHub }:
 
 rustPlatform.buildRustPackage rec {
   pname = "cargo-hakari";
-  version = "0.9.17";
+  version = "0.9.18";
 
-  src = fetchCrate {
-    inherit pname version;
-    sha256 = "sha256-FgG9sdXZhSlX4p3I9WL5ORN7FCg4Zgt/Y+GRCWhIoP8=";
+  src = fetchFromGitHub {
+    owner = "guppy-rs";
+    repo = "guppy";
+    rev = "cargo-hakari-${version}";
+    sha256 = "sha256-ZjU+0e0GmLCC9cha1RcTV0vEbuRi/SmU9qaNONIB7nI=";
   };
 
-  cargoHash = "sha256-pYjjiQUnBfZ9wQgXhm4c+A7zMAF9k/Mzl5ccPX407/A=";
+  cargoHash = "sha256-/KH+h+4xfU2fitWv+IrLkwgiQ8tVjm41DiZtbrerRZ4=";
+
+  cargoBuildFlags = [ "-p" "cargo-hakari" ];
+  cargoTestFlags = [ "-p" "cargo-hakari" ];
 
   meta = with lib; {
     description = "Manage workspace-hack packages to speed up builds in large workspaces.";