diff --git a/pkgs/development/python-modules/persistent/default.nix b/pkgs/development/python-modules/persistent/default.nix
index 5b5462cf4757..cb0b8ecf091d 100644
--- a/pkgs/development/python-modules/persistent/default.nix
+++ b/pkgs/development/python-modules/persistent/default.nix
@@ -10,14 +10,14 @@
 
 buildPythonPackage rec {
   pname = "persistent";
-  version = "4.9.0";
+  version = "4.9.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-RwGzHYHBBCJlclrzkEUOnZFq10ucF4twEAU4U1keDGo=";
+    hash = "sha256-pfkeAJD5OS/TJNl/TCpjbJI5lYKCOM2i4/vMaxu8RoY=";
   };
 
   nativeBuildInputs = [