diff --git a/collect.py b/collect.py
index 0f015a3..4d28476 100644
--- a/collect.py
+++ b/collect.py
@@ -53,6 +53,7 @@ from datetime import datetime, timezone
 from pathlib import Path
 
 from server import log_config, network, we_connect
+from weconnect.errors import AuthentificationError
 from server.data_model import ALL_DOMAINS, collect_snapshot, apply_procedural
 from server.storage_helpers import auto_out_path, load_last_24h_records, load_store, save_store
 from utils.jay_diff import jay_diff_full
@@ -145,6 +146,12 @@ def run(args: argparse.Namespace) -> None:
                     log.info("Record #%d saved at %s", len(store["records"]), snapshot["ts"])
                 except KeyboardInterrupt:
                     raise
+                except AuthentificationError:
+                    log.warning("Authentication error — re-logging in before next interval")
+                    try:
+                        wc.login()
+                    except Exception:
+                        log.exception("Re-login failed")
                 except Exception:
                     log.exception("Collection failed — will retry at next interval")