diff --git a/pkgs/development/python-modules/json-merge-patch/default.nix b/pkgs/development/python-modules/json-merge-patch/default.nix
index 8e7bce50297e..3562eb6f743e 100644
--- a/pkgs/development/python-modules/json-merge-patch/default.nix
+++ b/pkgs/development/python-modules/json-merge-patch/default.nix
@@ -2,28 +2,21 @@
   lib,
   buildPythonPackage,
   fetchPypi,
-  fetchpatch,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "json-merge-patch";
-  version = "0.2";
-  format = "setuptools";
+  version = "0.3.0";
+  pyproject = true;
 
   src = fetchPypi {
-    inherit pname version;
-    sha256 = "09898b6d427c08754e2a97c709cf2dfd7e28bd10c5683a538914975eab778d39";
+    pname = "json_merge_patch";
+    inherit version;
+    sha256 = "sha256-SgItePwvCctJ2Wxkbvw4DTterStcfaviLDkowsLpxOA=";
   };
 
-  patches = [
-    # This prevented tests from running (was using a relative import)
-    # https://github.com/OpenDataServices/json-merge-patch/pull/1
-    (fetchpatch {
-      name = "fully-qualified-json-merge-patch-import-on-tests";
-      url = "https://patch-diff.githubusercontent.com/raw/OpenDataServices/json-merge-patch/pull/1.patch";
-      sha256 = "1k6xsrxsmz03nwcqsf4gf0zsfnl2r20n83npic8z6bqlpl4lidl4";
-    })
-  ];
+  build-system = [ setuptools ];
 
   meta = with lib; {
     description = "JSON Merge Patch library";