diff --git a/pkgs/development/python-modules/twentemilieu/default.nix b/pkgs/development/python-modules/twentemilieu/default.nix
index 17f14b8e8f74..98352ac6d9c1 100644
--- a/pkgs/development/python-modules/twentemilieu/default.nix
+++ b/pkgs/development/python-modules/twentemilieu/default.nix
@@ -12,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "twentemilieu";
-  version = "0.6.1";
+  version = "1.0.0";
   format = "pyproject";
 
   disabled = pythonOlder "3.8";
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     owner = "frenck";
     repo = "python-twentemilieu";
     rev = "v${version}";
-    hash = "sha256-k2jdw2H/bNejNUjIEQlEA1KkHHpkyFlSDC1HKUoMIqQ=";
+    hash = "sha256-MTAVa5gP5e8TIE/i1DjfmwKm1zDVC/WEcYKxZSV/+Ug=";
   };
 
   postPatch = ''