diff --git a/pkgs/development/python-modules/aiomysql/default.nix b/pkgs/development/python-modules/aiomysql/default.nix
index acaeb0ba783e..4de8eaba3d8f 100644
--- a/pkgs/development/python-modules/aiomysql/default.nix
+++ b/pkgs/development/python-modules/aiomysql/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage rec {
   pname = "aiomysql";
-  version = "0.0.20";
+  version = "0.0.21";
   disabled = isPy27;
 
   src = fetchFromGitHub {
     owner = "aio-libs";
     repo = pname;
     rev = "v${version}";
-    sha256 = "1mxih81zc2k64briirpp5wz4f72l8v05avfyfibaq9fr6lcbih9b";
+    sha256 = "1qvy3phbsxp55161dnppjfx2m1kn82v0irc3xzqw0adfd81vaiad";
   };
 
   propagatedBuildInputs = [