diff --git a/pkgs/development/python-modules/aiosmtplib/default.nix b/pkgs/development/python-modules/aiosmtplib/default.nix
index 12c49c681005..b737d7135306 100644
--- a/pkgs/development/python-modules/aiosmtplib/default.nix
+++ b/pkgs/development/python-modules/aiosmtplib/default.nix
@@ -13,7 +13,7 @@
 
 buildPythonPackage rec {
   pname = "aiosmtplib";
-  version = "3.0.2";
+  version = "4.0.0";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
@@ -22,7 +22,7 @@ buildPythonPackage rec {
     owner = "cole";
     repo = "aiosmtplib";
     tag = "v${version}";
-    hash = "sha256-1GuxlgNvzVv6hEQY1Mkv7NxAoOik9gpIS90a6flfC+k=";
+    hash = "sha256-Bj5wkNaNm9ojjffsS4nNKUucwbitvApIK1Ux88MSOoE=";
   };
 
   build-system = [ hatchling ];