diff --git a/pkgs/development/python-modules/pyfakefs/default.nix b/pkgs/development/python-modules/pyfakefs/default.nix
index 9f9dbe7fd7bf..bac9202a2b22 100644
--- a/pkgs/development/python-modules/pyfakefs/default.nix
+++ b/pkgs/development/python-modules/pyfakefs/default.nix
@@ -7,13 +7,13 @@
 }:
 
 buildPythonPackage rec {
-  version = "4.6.2";
+  version = "4.6.3";
   pname = "pyfakefs";
   disabled = pythonOlder "3.5";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-jdnIAgvNCB8llleoadXq+cynuzZzx/A7+uiyi751mbY=";
+    sha256 = "sha256-bfEqfPZXY3obA2vCAFlyfGQvkpkOkP7i+wA9qjzabKE=";
   };
 
   postPatch = ''