diff --git a/pkgs/development/python-modules/canonicaljson/default.nix b/pkgs/development/python-modules/canonicaljson/default.nix
index e5ecff7837f9..feee27e852ec 100644
--- a/pkgs/development/python-modules/canonicaljson/default.nix
+++ b/pkgs/development/python-modules/canonicaljson/default.nix
@@ -9,21 +9,26 @@
 
 buildPythonPackage rec {
   pname = "canonicaljson";
-  version = "1.6.2";
-  format = "setuptools";
+  version = "1.6.3";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-rwC+jOnFiYV98Xa7lFlPDUOw4CfwJ6jXz4l4/bgZAko=";
+    hash = "sha256-yll2C8J0qJmg2nWAnWkJrkPlEjOB/W7wQKRNGVLAtEg=";
   };
 
   propagatedBuildInputs = [
-    frozendict
     simplejson
   ];
 
+  passthru.optional-dependencies = {
+    frozendict = [
+      frozendict
+    ];
+  };
+
   checkInputs = [
     pytestCheckHook
   ];