diff --git a/pkgs/tools/security/b3sum/default.nix b/pkgs/tools/security/b3sum/default.nix
index 0445739fd8d..0749cba209c 100644
--- a/pkgs/tools/security/b3sum/default.nix
+++ b/pkgs/tools/security/b3sum/default.nix
@@ -2,14 +2,14 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "b3sum";
-  version = "1.3.0";
+  version = "1.3.1";
 
   src = fetchCrate {
     inherit version pname;
-    sha256 = "sha256-mnX5ZetwOo0VMBIOqJEBpqnSX6EqBEO7qwfgtGclReQ=";
+    sha256 = "sha256-Vb4W1TfHppKm2Ib2VHm+917A09JY1oNebymzcQpPm8Q=";
   };
 
-  cargoSha256 = "sha256-SUoreAuWLxtBWmFdLDviDz16oVDB2ubTY3a3m+t8xx0=";
+  cargoSha256 = "sha256-cpY69NsbsHgQITdElsNjrhjaih9rgOVpFEv4Pfp9OPw=";
 
   meta = {
     description = "BLAKE3 cryptographic hash function";