diff --git a/pkgs/development/python-modules/canonicaljson/default.nix b/pkgs/development/python-modules/canonicaljson/default.nix
index 8edd8d05500..31daad18bdc 100644
--- a/pkgs/development/python-modules/canonicaljson/default.nix
+++ b/pkgs/development/python-modules/canonicaljson/default.nix
@@ -4,12 +4,12 @@
 
 buildPythonPackage rec {
   pname = "canonicaljson";
-  version = "1.3.0";
+  version = "1.4.0";
   disabled = isPy27;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "b4763db06a2e8553293c5edaa4bda05605c3307179a7ddfb30273a24ac384b6c";
+    sha256 = "899b7604f5a6a8a92109115d9250142cdf0b1dfdcb62cdb21d8fb5bf37780631";
   };
 
   propagatedBuildInputs = [