diff --git a/monitor.py b/monitor.py
index 19d35aae..55c9ebea 100644
--- a/monitor.py
+++ b/monitor.py
@@ -382,7 +382,13 @@ class EDLogs(FileSystemEventHandler):  # type: ignore # See below
             if event_type == 'Fileheader':
                 self.live = False
                 self.version = entry['gameversion']
-                self.is_beta = 'beta' in entry['gameversion'].lower()
+                self.is_beta = any(v in entry['gameversion'].lower() for v in ('alpha', 'beta'))
+
+                # TODO: This is an extra paranoia check, because we don't yet know what will (not) be in the Odyssey alpha string.
+                if 'Fleet Carriers Update' not in entry['gameversion']:
+                    logger.warning(f'Forcing is_beta to True due to gameversion: {entry["gameversion"]}')
+                    self.is_beta = True
+
                 self.cmdr = None
                 self.mode = None
                 self.group = None