diff --git a/pkgs/development/python-modules/blacken-docs/default.nix b/pkgs/development/python-modules/blacken-docs/default.nix
index 7370471c2604..638d8e5f2260 100644
--- a/pkgs/development/python-modules/blacken-docs/default.nix
+++ b/pkgs/development/python-modules/blacken-docs/default.nix
@@ -9,34 +9,28 @@
 
 buildPythonPackage rec {
   pname = "blacken-docs";
-  version = "1.15.0";
+  version = "1.19.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "adamchainz";
     repo = "blacken-docs";
-    rev = version;
-    hash = "sha256-3FGuFOAHCcybPwujWlh58NWtuF5CebaKTgBWgCGpSL8=";
+    tag = version;
+    hash = "sha256-cMnwOrkOma+su4CDheHRd484pG4GMSm+i/Xcus3E+m8=";
   };
 
-  build-system = [
-    setuptools
-  ];
+  build-system = [ setuptools ];
 
-  dependencies = [
-    black
-  ];
+  dependencies = [ black ];
 
-  nativeCheckInputs = [
-    pytestCheckHook
-  ];
+  nativeCheckInputs = [ pytestCheckHook ];
 
-  meta = with lib; {
+  meta = {
     homepage = "https://github.com/adamchainz/blacken-docs";
     changelog = "https://github.com/adamchainz/blacken-docs/blob/${src.rev}/CHANGELOG.rst";
     description = "Run Black on Python code blocks in documentation files";
-    license = licenses.mit;
-    maintainers = with maintainers; [ l0b0 ];
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.l0b0 ];
     mainProgram = "blacken-docs";
   };
 }