diff --git a/pkgs/development/python-modules/whenever/default.nix b/pkgs/development/python-modules/whenever/default.nix
index 87500e110e07..2e7437201bcb 100644
--- a/pkgs/development/python-modules/whenever/default.nix
+++ b/pkgs/development/python-modules/whenever/default.nix
@@ -19,19 +19,19 @@
 
 buildPythonPackage rec {
   pname = "whenever";
-  version = "0.9.5";
+  version = "0.10.0b2";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "ariebovenberg";
     repo = "whenever";
     tag = version;
-    hash = "sha256-HGASKQHQWXPzMcTHylRG94ZdL2gwLyHyfoTywllMTdA=";
+    hash = "sha256-39vl5/v4bkfNXuU9dXnXgUhR8NagvHFX2IRdS77e/nI=";
   };
 
   cargoDeps = rustPlatform.fetchCargoVendor {
     inherit src;
-    hash = "sha256-i5hbXk+CFrsnIhT3DjnWbP2GaIqJxll8fbxCFz/21M8=";
+    hash = "sha256-L4k0s28AYqOV/M9BQsczZT08bwtDYIzEdgpdR4z8CeU=";
   };
 
   build-system = [