diff --git a/vobject/icalendar.py b/vobject/icalendar.py
index 325bae7..52ff94b 100644
--- a/vobject/icalendar.py
+++ b/vobject/icalendar.py
@@ -80,7 +80,7 @@ def getTzid(tzid, smart=True):
                 tz = timezone(tzid)
                 registerTzid(toUnicode(tzid), tz)
             except UnknownTimeZoneError as e:
-                logging.error(e)
+                logging.error("Unknown Timezone: %r", e.args[0])
         except ImportError as e:
             logging.error(e)
     return tz
@@ -335,6 +335,10 @@ def pickTzid(tzinfo, allowUTC=False):
         if tzinfo is None or (not allowUTC and tzinfo_eq(tzinfo, utc)):
             return None
 
+        # Try a zoneinfo (CPython 3.9+) first.
+        if hasattr(tzinfo, 'key'):
+            return toUnicode(tzinfo.key)
+
         # Try pytz tzid key
         if hasattr(tzinfo, 'tzid'):
             return toUnicode(tzinfo.tzid)