diff --git a/pkgs/development/python-modules/isbnlib/default.nix b/pkgs/development/python-modules/isbnlib/default.nix
index 746cd3ab8adf..e43db60fb11d 100644
--- a/pkgs/development/python-modules/isbnlib/default.nix
+++ b/pkgs/development/python-modules/isbnlib/default.nix
@@ -7,11 +7,11 @@
 
 buildPythonPackage rec {
   pname = "isbnlib";
-  version = "3.10.8";
+  version = "3.10.9";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-6kBu8uFDiKs5ZJXw9gTS08lstaJWuWvAVW3Ycc19x7Q=";
+    sha256 = "sha256-P4GH6462+gJ9Jv8HdfKr1CDinOMyeUv1Uqhqa9ukcLg=";
   };
 
   checkInputs = [