diff --git a/config.env b/config.env
index 4dc37f3..9b3e589 100644
--- a/config.env
+++ b/config.env
@@ -30,8 +30,8 @@ LLM_ROLE_HISTORY_MAX_CHARS=1200
 # ASR voiceprint adapter
 VOICE_DETECTED_URL=http://voice-dected:8000
 VOICEPRINT_STORE=/data/asr_voiceprints.json
-VOICEPRINT_MATCH_THRESHOLD=0.55
-VOICEPRINT_MATCH_MARGIN=0.08
+VOICEPRINT_MATCH_THRESHOLD=0.45
+VOICEPRINT_MATCH_MARGIN=0.05
 REALTIME_PARTIAL_MIN_SECONDS=1.5
 REALTIME_PARTIAL_INTERVAL_SECONDS=2.0