diff --git a/pkgs/development/python-modules/iso8601/default.nix b/pkgs/development/python-modules/iso8601/default.nix
index ade0c71ee887..33afc5ae1fdd 100644
--- a/pkgs/development/python-modules/iso8601/default.nix
+++ b/pkgs/development/python-modules/iso8601/default.nix
@@ -10,14 +10,14 @@
 
 buildPythonPackage rec {
   pname = "iso8601";
-  version = "2.0.0";
+  version = "2.1.0";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-c5lg03x0x3vZvVRqdlYsy1gf49SCD/XDFB60nIOf2o8=";
+    hash = "sha256-ax04Ke6JIcQwGZjJCfeCn6ntPL2sDTsWry10Ou0bqN8=";
   };
 
   nativeBuildInputs = [