diff --git a/temporary/all-packages.nix b/temporary/all-packages.nix
index 84eaf7c..9a016d3 100644
--- a/temporary/all-packages.nix
+++ b/temporary/all-packages.nix
@@ -23,6 +23,7 @@ self: super: pkgs: with pkgs; {
   python36 = super.python36.override { packageOverrides = pythonOverrides; };
   python37 = super.python37.override { packageOverrides = pythonOverrides; };
   python38 = super.python38.override { packageOverrides = pythonOverrides; };
+  python39 = super.python39.override { packageOverrides = pythonOverrides; };
 
   pythonOverrides = import ./python-packages.nix pkgs;