diff --git a/nix/tests/NixOS-integration-test.nix b/nix/tests/NixOS-integration-test.nix
index 413c774..32ff775 100644
--- a/nix/tests/NixOS-integration-test.nix
+++ b/nix/tests/NixOS-integration-test.nix
@@ -43,6 +43,7 @@ self:
       script = ''
         mkdir --verbose -p '/var/lib/bind/zones/dyn/'
         chmod 775 '/var/lib/bind/zones/dyn/'
+        chgrp zonegen '/var/lib/bind/zones/dyn/'
 
         # Create an initial file for zonewatch and BIND to read
         (set -o noclobber;>'/var/lib/bind/zones/dyn/example.org.zone'||true) &>/dev/null