diff --git a/pkgs/development/python-modules/pytz/default.nix b/pkgs/development/python-modules/pytz/default.nix
index ad6b92c00b6a..a6f0018e3fd1 100644
--- a/pkgs/development/python-modules/pytz/default.nix
+++ b/pkgs/development/python-modules/pytz/default.nix
@@ -9,12 +9,12 @@
 
 buildPythonPackage rec {
   pname = "pytz";
-  version = "2025.2";
+  version = "2026.1.post1";
   pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-NguePbtJognCGtYYCcf7RTZD4EiziSTHZYE1RnRugcM=";
+    hash = "sha256-M3jd5qDD0mcZGCFCxW5gx/mvfpaAdvMarladcqA1juE=";
   };
 
   postPatch = ''