diff --git a/pkgs/development/python-modules/chiavdf/default.nix b/pkgs/development/python-modules/chiavdf/default.nix
index 80e39ccc9014..6f050c639502 100644
--- a/pkgs/development/python-modules/chiavdf/default.nix
+++ b/pkgs/development/python-modules/chiavdf/default.nix
@@ -14,12 +14,12 @@
 
 buildPythonPackage rec {
   pname = "chiavdf";
-  version = "1.0.8";
+  version = "1.0.9";
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-ilT7tCdX8ak3qmpXJ0LITf0ZGAdFSN4tm6GKw06A/m8=";
+    hash = "sha256-G4npp0G8TNk2y/T6myNr8NCfkBdcknsWds+XBZiNnQY=";
   };
 
   patches = [