diff --git a/pkgs/development/python-modules/canonicaljson/default.nix b/pkgs/development/python-modules/canonicaljson/default.nix
index 4600e0c1e6b6..3e88db6c915b 100644
--- a/pkgs/development/python-modules/canonicaljson/default.nix
+++ b/pkgs/development/python-modules/canonicaljson/default.nix
@@ -10,14 +10,14 @@
 
 buildPythonPackage rec {
   pname = "canonicaljson";
-  version = "1.6.3";
+  version = "1.6.4";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-yll2C8J0qJmg2nWAnWkJrkPlEjOB/W7wQKRNGVLAtEg=";
+    hash = "sha256-bAmyEZUR8w6xEmz82XOhCCTiDxz9JQOc3j0SGN2cjY8=";
   };
 
   nativeBuildInputs = [