diff --git a/backend/app/agent/nl2sql.py b/backend/app/agent/nl2sql.py
index 20922ae..8a3907a 100644
--- a/backend/app/agent/nl2sql.py
+++ b/backend/app/agent/nl2sql.py
@@ -38,7 +38,7 @@ NL2SQL_LLM_TIMEOUT_SECONDS = int(os.getenv("NL2SQL_LLM_TIMEOUT_SECONDS", "90"))
 NL2SQL_LLM_REQUEST_TIMEOUT_SECONDS = int(os.getenv("NL2SQL_LLM_REQUEST_TIMEOUT_SECONDS", "45"))
 NL2SQL_LLM_RETRY_COUNT = int(os.getenv("NL2SQL_LLM_RETRY_COUNT", "0"))
 NL2SQL_SQL_EXEC_TIMEOUT_SECONDS = 60
-NL2SQL_CHART_TIMEOUT_SECONDS = int(os.getenv("NL2SQL_CHART_TIMEOUT_SECONDS", "20"))
+NL2SQL_CHART_TIMEOUT_SECONDS = int(os.getenv("NL2SQL_CHART_TIMEOUT_SECONDS", "45"))
 
 _schema_cache: Dict[str, Dict[str, Any]] = {}
 _connection_cache: Dict[str, Dict[str, Any]] = {}