diff --git a/pkgs/development/python-modules/asttokens/default.nix b/pkgs/development/python-modules/asttokens/default.nix
index 4a07d2ac96ec..f45c5e7aff33 100644
--- a/pkgs/development/python-modules/asttokens/default.nix
+++ b/pkgs/development/python-modules/asttokens/default.nix
@@ -9,11 +9,12 @@
 
 buildPythonPackage rec {
   pname = "asttokens";
-  version = "2.0.8";
+  version = "2.1.0";
+  format = "pyproject";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-xh4WJG7Pss3ilYQGtMjrwEPJ5tc6qoPJQWc7NeXTp2s=";
+    hash = "sha256-SqdkAaFRyMxXLZBqrXrqKoQXgINKGdeA9DIcD+G1RjU=";
   };
 
   nativeBuildInputs = [