diff --git a/pkgs/development/python-modules/cloudpickle/default.nix b/pkgs/development/python-modules/cloudpickle/default.nix
index f70ebee411a..b00d210a464 100644
--- a/pkgs/development/python-modules/cloudpickle/default.nix
+++ b/pkgs/development/python-modules/cloudpickle/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "cloudpickle";
-  version = "0.5.5";
+  version = "0.5.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "6ea4b548f61a4f616b065182716318c7dced8c053517f35ac59cec22802daf3d";
+    sha256 = "0390ecb3731ac035d74c34651460f4a683e9ef7443861712b8d56c20c2f92113";
   };
 
   buildInputs = [ pytest mock ];