diff --git a/pkgs/fawltydeps/default.nix b/pkgs/fawltydeps/default.nix
index dae554d..95277e8 100644
--- a/pkgs/fawltydeps/default.nix
+++ b/pkgs/fawltydeps/default.nix
@@ -27,16 +27,16 @@ let
     exceptiongroup = prev.exceptiongroup.overridePythonAttrs (old: {
       buildInputs = old.buildInputs ++ [ prev.flit-scm ];
     });
-    mypy = prev.mypy.overridePythonAttrs (old: {
-      buildInputs = old.buildInputs ++ [ prev.types-psutil ];
+    pip-requirements-parser = prev.pip-requirements-parser.overridePythonAttrs (old: {
+      dontConfigure = true;
     });
   });
 
   src = fetchFromGitHub {
     owner = "tweag";
     repo = "FawltyDeps";
-    rev = "0201e74a158c5774db9150e1e70f01e76bad34e7";
-    sha256 = "sha256-kSAy6IOS+G+e7hG4ZseglhOsnJ7Tg87MaMRCWUoSJdA=";
+    rev = "2f9338d3ceb0c1954500f2cbede16ce223bfb160";
+    sha256 = "sha256-h5jWeJ5ZfrTuGZr14nUFaNFMCRlpBzDxfFKRYTqxFDI=";
   };
 in
 poetry2nix.mkPoetryApplication {