diff --git a/default.nix b/default.nix
index 8187c0a..6b629f1 100644
--- a/default.nix
+++ b/default.nix
@@ -32,7 +32,7 @@ let
   };
 
   sdkArgs = {
-    python3 = python38;
+    python3 = python39;
   };
 
 in