diff --git a/pkgs/tools/misc/krapslog/default.nix b/pkgs/tools/misc/krapslog/default.nix
index 5aec73bde5c..1175739159d 100644
--- a/pkgs/tools/misc/krapslog/default.nix
+++ b/pkgs/tools/misc/krapslog/default.nix
@@ -2,16 +2,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "krapslog";
-  version = "0.3.2";
+  version = "0.4.0";
 
   src = fetchFromGitHub {
     owner = "acj";
     repo = "krapslog-rs";
     rev = version;
-    sha256 = "sha256-bzpZuLFSoIjZpK9cbxQEeyRwzuP7aDRG/xn/0056j+c=";
+    sha256 = "sha256-ETP0BvtfMHznEbM0Vu/gMoRvXn4y2XcXw6CoU60A+Cg=";
   };
 
-  cargoSha256 = "sha256-o9e0EakIbi+qk0gPxlPGfNvRidmCklieJ94sYBSR3IY=";
+  cargoSha256 = "sha256-ioD0V1S/kPF5etey04Xz1Iz/jDpyunx9PtpWKdwk21g=";
 
   buildInputs = lib.optional stdenv.isDarwin libiconv;