diff --git a/pkgs/development/python-modules/h2/default.nix b/pkgs/development/python-modules/h2/default.nix
index 6d432fed0e4e..a75b7ededb7c 100644
--- a/pkgs/development/python-modules/h2/default.nix
+++ b/pkgs/development/python-modules/h2/default.nix
@@ -3,11 +3,11 @@
 
 buildPythonPackage rec {
   pname = "h2";
-  version = "3.2.0";
+  version = "4.0.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "051gg30aca26rdxsmr9svwqm06pdz9bv21ch4n0lgi7jsvml2pw7";
+    sha256 = "bb7ac7099dd67a857ed52c815a6192b6b1f5ba6b516237fc24a085341340593d";
   };
 
   propagatedBuildInputs = [ enum34 hpack hyperframe ];