diff --git a/pkgs/development/python-modules/cypherpunkpay/default.nix b/pkgs/development/python-modules/cypherpunkpay/default.nix
index 9bf5e8fcd85d..4f562c00a444 100644
--- a/pkgs/development/python-modules/cypherpunkpay/default.nix
+++ b/pkgs/development/python-modules/cypherpunkpay/default.nix
@@ -44,6 +44,7 @@ buildPythonPackage rec {
     "pypng"
     "tzlocal"
     "yoyo-migrations"
+    "waitress"
   ];
 
   nativeBuildInputs = [