diff --git a/pkgs/development/python-modules/rstcheck-core/default.nix b/pkgs/development/python-modules/rstcheck-core/default.nix
index 48f117424c5c..31938569ca5a 100644
--- a/pkgs/development/python-modules/rstcheck-core/default.nix
+++ b/pkgs/development/python-modules/rstcheck-core/default.nix
@@ -15,7 +15,7 @@
 
 buildPythonPackage rec {
   pname = "rstcheck-core";
-  version = "1.0.2";
+  version = "1.0.3";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
@@ -24,7 +24,7 @@ buildPythonPackage rec {
     owner = "rstcheck";
     repo = pname;
     rev = "refs/tags/v${version}";
-    hash = "sha256-XNr+prK9VDP66ZaFvh3Qrx+eJs6mnVO8lvoMC/qrCLs=";
+    hash = "sha256-9U+GhkwBr+f3yEe7McOxqPRUuTp9vP+3WT5wZ92n32w=";
   };
 
   nativeBuildInputs = [
@@ -45,12 +45,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  postPatch = ''
-    substituteInPlace pyproject.toml \
-      --replace 'types-docutils = ">=0.18, <0.19"' 'types-docutils = ">=0.18"' \
-      --replace 'docutils = ">=0.7, <0.19"' 'docutils = ">=0.7"'
-  '';
-
   pythonImportsCheck = [
     "rstcheck_core"
   ];