diff --git a/pkgs/development/python-modules/ujson/default.nix b/pkgs/development/python-modules/ujson/default.nix
index d60ec743032e..ac5f122068ac 100644
--- a/pkgs/development/python-modules/ujson/default.nix
+++ b/pkgs/development/python-modules/ujson/default.nix
@@ -6,12 +6,12 @@
 
 buildPythonPackage rec {
   pname = "ujson";
-  version = "1.35";
+  version = "3.0.0";
   disabled = isPyPy;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "11jz5wi7mbgqcsz52iqhpyykiaasila4lq8cmc2d54bfa3jp6q7n";
+    sha256 = "e0199849d61cc6418f94d52a314c6a27524d65e82174d2a043fb718f73d1520d";
   };
 
   meta = with stdenv.lib; {