diff --git a/pkgs/development/tools/rust/cargo-guppy/default.nix b/pkgs/development/tools/rust/cargo-guppy/default.nix
index 62e7b970b516..7074dd4e93ca 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-2022-10-29";
+  version = "unstable-2022-11-07";
 
   src = fetchFromGitHub {
     owner = "guppy-rs";
     repo = "guppy";
-    rev = "448d830de4867c32eaa57911a392e47c81d1a0e0";
-    sha256 = "sha256-Ce6WO01gN8Ip5smAyGNEg87vyFXFDIq6ilHTbEStm/c=";
+    rev = "40d66ee25a12657c36b9cef67293fc4c296a144f";
+    sha256 = "sha256-f+xUifb7TlaXONNQfFZpnuYDTxgkelL+Knc+X8vc3Gg=";
   };
 
-  cargoSha256 = "sha256-DR/k6g2uWCOhM20qROybsH4gTvH+Kd+jaDHGZ4loK7g=";
+  cargoSha256 = "sha256-qRFJJX/5hgveGAQtW0HJYAPZjHRlTHalvqSRdEjtYiU=";
 
   nativeBuildInputs = [ pkg-config ];