diff --git a/types/navermaps/index.d.ts b/types/navermaps/index.d.ts
index eb81d79a257597..b34c979827080f 100644
--- a/types/navermaps/index.d.ts
+++ b/types/navermaps/index.d.ts
@@ -1532,6 +1532,10 @@ declare namespace naver.maps {
      */
     class StreetLayer extends LabelLayer {
         constructor(option?: StreetLayerOptions);
+        // Only available in the Maps GL submodule.
+        setAirWaterView?(visible: boolean): void;
+        // Only available in the Maps GL submodule.
+        isVisibleAirWaterView?(): boolean;
     }
 
     /**
diff --git a/types/navermaps/navermaps-tests.ts b/types/navermaps/navermaps-tests.ts
index 3a45a9609c4630..3d06df187a091b 100644
--- a/types/navermaps/navermaps-tests.ts
+++ b/types/navermaps/navermaps-tests.ts
@@ -68,6 +68,10 @@ const cadastral = new naver.maps.CadastralLayer();
 naver.maps.Event.once(map, "init", function() {
     street.setMap(map);
     cadastral.setMap(map);
+
+    // Optional methods
+    street.setAirWaterView?.(false);
+    street.isVisibleAirWaterView?.();
 });
 
 /**