diff --git a/pkgs/development/python-modules/rich-toolkit/default.nix b/pkgs/development/python-modules/rich-toolkit/default.nix
index bac82024c583..dfb682351eef 100644
--- a/pkgs/development/python-modules/rich-toolkit/default.nix
+++ b/pkgs/development/python-modules/rich-toolkit/default.nix
@@ -17,18 +17,23 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "rich-toolkit";
-  version = "0.17.1";
+  version = "0.20.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "patrick91";
     repo = "rich-toolkit";
-    tag = version;
-    hash = "sha256-69x760lnMdwrNFUL1g9PBlTRGz34Ur2CHWbJq7PqBmk=";
+    tag = finalAttrs.version;
+    hash = "sha256-XYSksCMCCxO6wzsEEJ6X340iT32hU5n/EikKLZ2m7A0=";
   };
 
+  postPatch = ''
+    # the commit updating the version happens only after tagging
+    sed -i 's/version = ".*"/version = "${finalAttrs.version}"/' pyproject.toml
+  '';
+
   build-system = [ hatchling ];
 
   dependencies = [
@@ -46,10 +51,10 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "rich_toolkit" ];
 
   meta = {
-    changelog = "https://github.com/patrick91/rich-toolkit/releases/tag/${src.tag}";
+    changelog = "https://github.com/patrick91/rich-toolkit/blob/${finalAttrs.src.tag}/CHANGELOG.md";
     description = "Rich toolkit for building command-line applications";
     homepage = "https://github.com/patrick91/rich-toolkit/";
     license = lib.licenses.mit;
     maintainers = [ ];
   };
-}
+})