diff --git a/pkgs/development/python-modules/mypy-boto3-s3/default.nix b/pkgs/development/python-modules/mypy-boto3-s3/default.nix
index 1c48a6afae77..eb36da387f60 100644
--- a/pkgs/development/python-modules/mypy-boto3-s3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3-s3/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage rec {
   pname = "mypy-boto3-s3";
-  version = "1.25.0";
+  version = "1.26.0.post1";
   format = "setuptools";
 
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-aJd/dEzjucQgiEZ/9m4z55HKPyew3FXztVApjwPqGm8=";
+    hash = "sha256-bXB5+Mc53Jk8vtrQc2KZxBOyl4FLc3laOFWnkWnsyTg=";
   };
 
   propagatedBuildInputs = [