diff --git a/db/db.go b/db/db.go
index 2b6d7cf..f8c16bf 100644
--- a/db/db.go
+++ b/db/db.go
@@ -867,7 +867,7 @@ func Wipe_card(card_name string) (*Card_wipe_info, error) {
 	return &card_wipe_info, nil
 }
 
-func Update_card(card_name string, tx_limit_sats int, lnurlw_enable bool) error {
+func Update_card(card_name string, tx_limit_sats int, day_limit_sats int, lnurlw_enable bool) error {
 
 	lnurlw_enable_yn := "N"
 	if lnurlw_enable {
@@ -882,10 +882,10 @@ func Update_card(card_name string, tx_limit_sats int, lnurlw_enable bool) error
 
 	defer db.Close()
 
-	sqlStatement := `UPDATE cards SET tx_limit_sats = $2, lnurlw_enable = $3 ` +
+	sqlStatement := `UPDATE cards SET tx_limit_sats = $2, lnurlw_enable = $3, day_limit_sats = $4 ` +
 		`WHERE card_name = $1;`
 
-	res, err := db.Exec(sqlStatement, card_name, tx_limit_sats, lnurlw_enable_yn)
+	res, err := db.Exec(sqlStatement, card_name, tx_limit_sats, lnurlw_enable_yn, day_limit_sats)
 
 	if err != nil {
 		return err
diff --git a/internalapi/updateboltcard.go b/internalapi/updateboltcard.go
index b754456..39d83c2 100644
--- a/internalapi/updateboltcard.go
+++ b/internalapi/updateboltcard.go
@@ -1,11 +1,12 @@
 package internalapi
 
 import (
+	"net/http"
+	"strconv"
+
 	"github.com/boltcard/boltcard/db"
 	"github.com/boltcard/boltcard/resp_err"
 	log "github.com/sirupsen/logrus"
-	"net/http"
-	"strconv"
 )
 
 func Updateboltcard(w http.ResponseWriter, r *http.Request) {
@@ -25,6 +26,15 @@ func Updateboltcard(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	day_max_str := r.URL.Query().Get("day_max")
+	day_max, err := strconv.Atoi(day_max_str)
+	if err != nil {
+		msg := "updateboltcard: day_max is not a valid integer"
+		log.Warn(msg)
+		resp_err.Write_message(w, msg)
+		return
+	}
+
 	enable_flag_str := r.URL.Query().Get("enable")
 	enable_flag, err := strconv.ParseBool(enable_flag_str)
 	if err != nil {
@@ -54,12 +64,12 @@ func Updateboltcard(w http.ResponseWriter, r *http.Request) {
 	// log the request
 
 	log.WithFields(log.Fields{
-		"card_name": card_name, "tx_max": tx_max,
+		"card_name": card_name, "tx_max": tx_max, "day_max": day_max,
 		"enable": enable_flag}).Info("updateboltcard API request")
 
 	// update the card record
 
-	err = db.Update_card(card_name, tx_max, enable_flag)
+	err = db.Update_card(card_name, tx_max, day_max, enable_flag)
 	if err != nil {
 		log.Warn(err.Error())
 		return