diff --git a/pkgs/development/tools/rust/cargo-llvm-lines/default.nix b/pkgs/development/tools/rust/cargo-llvm-lines/default.nix
index 614630549b77..3e567af66173 100644
--- a/pkgs/development/tools/rust/cargo-llvm-lines/default.nix
+++ b/pkgs/development/tools/rust/cargo-llvm-lines/default.nix
@@ -2,16 +2,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "cargo-llvm-lines";
-  version = "0.4.39";
+  version = "0.4.40";
 
   src = fetchFromGitHub {
     owner = "dtolnay";
     repo = pname;
     rev = version;
-    hash = "sha256-iy8bZvF3JYnlABzhmsrzo89pmKAWQYVNSZ9HoplpWiY=";
+    hash = "sha256-FyPq2+Smx4ZbJG13TKUHlyAANU4JbpAAUxisH9c4Aq8=";
   };
 
-  cargoHash = "sha256-vFj7U+30dcLkFJ1eet6lykTcJHzKWOSzAqPqKJrp6Gg=";
+  cargoHash = "sha256-AH27+WrWguFpZFIq3N8Wb1Nlwbof6tgX0W4AtwMtoVw=";
 
   meta = with lib; {
     description = "Count the number of lines of LLVM IR across all instantiations of a generic function";