diff --git a/snscrape/cli.py b/snscrape/cli.py
index 45df226..c81e0c3 100644
--- a/snscrape/cli.py
+++ b/snscrape/cli.py
@@ -223,7 +223,7 @@ def configure_logging(verbosity, dumpLocals_):
 
 
 def json_serialise_datetime(obj):
-	if isinstance(obj, datetime.datetime):
+	if isinstance(obj, (datetime.datetime, datetime.date)):
 		return obj.isoformat()
 	raise TypeError(f'Object of type {type(obj)} is not JSON serializable')