diff --git a/mailman_sync.py b/mailman_sync.py
index 59c272e..efbf539 100755
--- a/mailman_sync.py
+++ b/mailman_sync.py
@@ -62,4 +62,8 @@ if __name__ == "__main__":
     argp.add_argument("--list-suffix", help="Suffix for mailing lists")
     args = argp.parse_args()
 
-    main(args.bin, args.api, args.token, args.list_suffix)
+    try:
+        main(args.bin, args.api, args.token, args.list_suffix)
+    except subprocess.CalledProcessError as e:
+        print(e.stderr)
+        raise