diff --git a/pkgs/development/python-modules/aiohttp/default.nix b/pkgs/development/python-modules/aiohttp/default.nix
index 2e5191909bb3..90a7b41f7c10 100644
--- a/pkgs/development/python-modules/aiohttp/default.nix
+++ b/pkgs/development/python-modules/aiohttp/default.nix
@@ -25,13 +25,13 @@
 
 buildPythonPackage rec {
   pname = "aiohttp";
-  version = "3.6.2";
+  version = "3.6.3";
   # https://github.com/aio-libs/aiohttp/issues/4525 python3.8 failures
   disabled = pythonOlder "3.5";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "09pkw6f1790prnrq0k8cqgnf1qy57ll8lpmc6kld09q7zw4vi6i5";
+    sha256 = "698cd7bc3c7d1b82bb728bae835724a486a8c376647aec336aa21a60113c3645";
   };
 
   checkInputs = [