diff --git a/lib/model/user_setting.dart b/lib/model/user_setting.dart
index d3daf38..a8c9390 100644
--- a/lib/model/user_setting.dart
+++ b/lib/model/user_setting.dart
@@ -9,6 +9,7 @@ class Setting {
   String? host;
   String? path;
   String? nodeId;
+  bool? customLambdaServer;
   String? lambdaServer;
   String? rune;
 
@@ -17,7 +18,8 @@ class Setting {
       this.host,
       this.path,
       this.nodeId,
-      this.lambdaServer = "https://lnlambda.lnmetrics.info",
+      this.customLambdaServer,
+      this.lambdaServer,
       this.rune}) {
     clientMode = ClientProvider.getClientByDefPlatform().first;
   }
@@ -56,6 +58,7 @@ class Setting {
             'nodeId': nodeId,
             'host': host,
             'rune': rune,
+            'customLambdaServer': customLambdaServer,
             'lambdaServer': lambdaServer,
           };
         }
@@ -73,6 +76,7 @@ class Setting {
         return path != null;
       case ClientMode.lnlambda:
         return nodeId != null &&
+            customLambdaServer != null &&
             lambdaServer != null &&
             rune != null &&
             host != null;
diff --git a/lib/model/user_setting.g.dart b/lib/model/user_setting.g.dart
index e690490..f036dd8 100644
--- a/lib/model/user_setting.g.dart
+++ b/lib/model/user_setting.g.dart
@@ -11,6 +11,7 @@ Setting _$SettingFromJson(Map<String, dynamic> json) => Setting(
       host: json['host'] as String?,
       path: json['path'] as String?,
       nodeId: json['nodeId'] as String?,
+      customLambdaServer: json['customLambdaServer'] as bool?,
       lambdaServer: json['lambdaServer'] as String?,
       rune: json['rune'] as String?,
     );
@@ -28,6 +29,7 @@ Map<String, dynamic> _$SettingToJson(Setting instance) {
   writeNotNull('host', instance.host);
   writeNotNull('path', instance.path);
   writeNotNull('nodeId', instance.nodeId);
+  writeNotNull('customLambdaServer', instance.customLambdaServer);
   writeNotNull('lambdaServer', instance.lambdaServer);
   writeNotNull('rune', instance.rune);
   return val;
diff --git a/lib/views/setting/lnlambda_setting_view.dart b/lib/views/setting/lnlambda_setting_view.dart
index 8b63c39..a3d2591 100644
--- a/lib/views/setting/lnlambda_setting_view.dart
+++ b/lib/views/setting/lnlambda_setting_view.dart
@@ -40,16 +40,48 @@ class _LnlambdaSettingViewState extends State<LnlambdaSettingView> {
             ),
           ),
           const Text("Lambda Server"),
-          TextFormField(
-            controller: TextEditingController(text: setting.lambdaServer),
-            onChanged: (text) {
-              setting.lambdaServer = text;
+          DropdownButtonFormField(
+            value: setting.customLambdaServer == null
+                ? null
+                : setting.customLambdaServer == true
+                    ? 'custom'
+                    : setting.lambdaServer,
+            items: const [
+              DropdownMenuItem(
+                value: 'https://lnlambda.lnmetrics.info',
+                child: Text("https://lnlambda.lnmetrics.info"),
+              ),
+              DropdownMenuItem(
+                value: 'custom',
+                child: Text("Enter lambda server url manually"),
+              ),
+            ],
+            onChanged: (value) {
+              setState(() {
+                if (value == 'custom') {
+                  setting.customLambdaServer = true;
+                } else {
+                  setting.customLambdaServer = false;
+                  setting.lambdaServer = value as String;
+                }
+              });
             },
-            decoration: const InputDecoration(
-              label: Text("lnlambda server url"),
-              border: OutlineInputBorder(),
-            ),
           ),
+          () {
+            if (setting.customLambdaServer == true) {
+              return TextFormField(
+                controller: TextEditingController(text: setting.lambdaServer),
+                onChanged: (text) {
+                  setting.lambdaServer = text;
+                },
+                decoration: const InputDecoration(
+                  label: Text("lnlambda server url"),
+                  border: OutlineInputBorder(),
+                ),
+              );
+            }
+            return const SizedBox();
+          }(),
           const Text("Rune"),
           TextFormField(
             controller: TextEditingController(text: setting.rune ?? ''),