diff --git a/pkgs/development/python-modules/transmission-rpc/default.nix b/pkgs/development/python-modules/transmission-rpc/default.nix
index 937ff9b07d89..c46df1afc882 100644
--- a/pkgs/development/python-modules/transmission-rpc/default.nix
+++ b/pkgs/development/python-modules/transmission-rpc/default.nix
@@ -13,7 +13,7 @@
 
 buildPythonPackage rec {
   pname = "transmission-rpc";
-  version = "4.2.0";
+  version = "4.2.1";
   format = "pyproject";
 
   disabled = pythonOlder "3.8";
@@ -22,7 +22,7 @@ buildPythonPackage rec {
     owner = "Trim21";
     repo = "transmission-rpc";
     rev = "refs/tags/v${version}";
-    hash = "sha256-uWJCDnlyukm7nrcENg/UmqrEjBYMZDK09Ym3wvWgGls=";
+    hash = "sha256-+NjJscLRGNSDmyrOMjwUMtJPVz2N32Cy80Q3iu33QJc=";
   };
 
   nativeBuildInputs = [