diff --git a/pkgs/development/python-modules/pysigset/default.nix b/pkgs/development/python-modules/pysigset/default.nix
index ccacb412924f..43c8e81f5aa7 100644
--- a/pkgs/development/python-modules/pysigset/default.nix
+++ b/pkgs/development/python-modules/pysigset/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "pysigset";
-  version = "0.3.2";
+  version = "0.4.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0ym44z3nwp8chfi7snmknkqnl2q9bghzv9p923r8w748i5hvyxx8";
+    sha256 = "13ef98b058489ff572b6667c38970a544699895c0844cb3ac2494e3a59ac51e6";
   };
 
   meta = with lib; {