diff --git a/pkgs/development/python-modules/trio/default.nix b/pkgs/development/python-modules/trio/default.nix
index f9b325ecc295..dde139103454 100644
--- a/pkgs/development/python-modules/trio/default.nix
+++ b/pkgs/development/python-modules/trio/default.nix
@@ -18,12 +18,12 @@
 
 buildPythonPackage rec {
   pname = "trio";
-  version = "0.20.0";
+  version = "0.21.0";
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-ZwpS0xFdDoeeGsg4pOuZmvMvhYFj46cE/kg53ipnYHA=";
+    sha256 = "sha256-Uj85t7ae73NQHOv+Gq/UAKmq1bA1Q6Dt7VKVJIj/HBM=";
   };
 
   propagatedBuildInputs = [