diff --git a/pkgs/development/python-modules/msgpack-numpy/default.nix b/pkgs/development/python-modules/msgpack-numpy/default.nix
index cae571fe2f5..e04e9d1e802 100644
--- a/pkgs/development/python-modules/msgpack-numpy/default.nix
+++ b/pkgs/development/python-modules/msgpack-numpy/default.nix
@@ -9,11 +9,11 @@
 
 buildPythonPackage rec {
   pname = "msgpack-numpy";
-  version = "0.4.3";
+  version = "0.4.3.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "9d6da0bbb04d7cab2bf9f08f78232c954f00ac95cf2384149e779a31ce859126";
+    sha256 = "31fd5dd009bbee7f8b107db8c859e3a0a2793acc196f25ffbbae1e71b4c63ca5";
   };
 
   buildInputs = [