diff --git a/pkgs/development/python-modules/fastbencode/default.nix b/pkgs/development/python-modules/fastbencode/default.nix
index 268ec30ab89d..79d8045bdb0b 100644
--- a/pkgs/development/python-modules/fastbencode/default.nix
+++ b/pkgs/development/python-modules/fastbencode/default.nix
@@ -12,19 +12,19 @@
 
 buildPythonPackage rec {
   pname = "fastbencode";
-  version = "0.3.9";
+  version = "0.3.10";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "breezy-team";
     repo = "fastbencode";
     tag = "v${version}";
-    hash = "sha256-TZGIFcWm037h4Xs6e5a9j24FqhNxP9H71QVtL1homjQ=";
+    hash = "sha256-e+Ei+UIJ5sve6k3ApPJ2nswTgZLkzxZmpthK/f/rfCs=";
   };
 
   cargoDeps = rustPlatform.fetchCargoVendor {
     inherit pname version src;
-    hash = "sha256-4DP8WOho4CKESfQHynZlosafcGPFqjpaOiZfLkcML3A=";
+    hash = "sha256-dqD/QF6/XCB9H/QkEobfIOo9S663fh9AHUuHqCoEcLM=";
   };
 
   nativeBuildInputs = [