diff --git a/pkgs/development/python-modules/ciscoconfparse/default.nix b/pkgs/development/python-modules/ciscoconfparse/default.nix
index e6db689a45c5..49b36a5c6582 100644
--- a/pkgs/development/python-modules/ciscoconfparse/default.nix
+++ b/pkgs/development/python-modules/ciscoconfparse/default.nix
@@ -33,6 +33,7 @@ buildPythonPackage rec {
     passlib
     dnspython
     loguru
+    toml
   ];
 
   checkInputs = [