diff --git a/import_mailman3_list_config.py b/import_mailman3_list_config.py
index 22587cf..219b694 100755
--- a/import_mailman3_list_config.py
+++ b/import_mailman3_list_config.py
@@ -75,6 +75,8 @@ def main(args):
     # patch config
     cnt = 0
     for k, v in p.items():
+        if (type(v) == bool):
+            v = str(v)
         result = requests.patch(f"{REST_PATH}/{pargs.list}/config", auth=rest_auth, json={k: v})
         if result.ok:
             cnt += 1