diff --git a/pkgs/development/python-modules/pylibmc/default.nix b/pkgs/development/python-modules/pylibmc/default.nix
index 039c793f20b2..3cd7a05e54ba 100644
--- a/pkgs/development/python-modules/pylibmc/default.nix
+++ b/pkgs/development/python-modules/pylibmc/default.nix
@@ -9,14 +9,14 @@
 
 buildPythonPackage rec {
   pname = "pylibmc";
-  version = "1.6.2";
+  version = "1.6.3";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-QatJ05VAdnN0iRvvC+tSkcqXvrcEi3r3dSEGSVPATcA=";
+    hash = "sha256-7vpGEVU3q61l++LgMqzRs0Y9m/njNa9LCRbfTk0yBuA=";
   };
 
   buildInputs = [