diff --git a/mediapipe/tasks/web/vision/gesture_recognizer/gesture_recognizer.ts b/mediapipe/tasks/web/vision/gesture_recognizer/gesture_recognizer.ts
index 4927d3632..74d37cb63 100644
--- a/mediapipe/tasks/web/vision/gesture_recognizer/gesture_recognizer.ts
+++ b/mediapipe/tasks/web/vision/gesture_recognizer/gesture_recognizer.ts
@@ -140,6 +140,11 @@ export class GestureRecognizer extends VisionTaskRunner {
         new HandGestureRecognizerGraphOptions();
     this.options.setHandGestureRecognizerGraphOptions(
         this.handGestureRecognizerGraphOptions);
+    this.handDetectorGraphOptions.setMinDetectionConfidence(DEFAULT_CONFIDENCE);
+    this.handLandmarkerGraphOptions.setMinTrackingConfidence(
+        DEFAULT_CONFIDENCE);
+    this.handLandmarksDetectorGraphOptions.setMinDetectionConfidence(
+        DEFAULT_CONFIDENCE);
   }
 
   protected override get baseOptions(): BaseOptionsProto {
@@ -162,12 +167,20 @@ export class GestureRecognizer extends VisionTaskRunner {
   override setOptions(options: GestureRecognizerOptions): Promise<void> {
     this.handDetectorGraphOptions.setNumHands(
         options.numHands ?? DEFAULT_NUM_HANDS);
-    this.handDetectorGraphOptions.setMinDetectionConfidence(
-        options.minHandDetectionConfidence ?? DEFAULT_CONFIDENCE);
-    this.handLandmarkerGraphOptions.setMinTrackingConfidence(
-        options.minTrackingConfidence ?? DEFAULT_CONFIDENCE);
-    this.handLandmarksDetectorGraphOptions.setMinDetectionConfidence(
-        options.minHandPresenceConfidence ?? DEFAULT_CONFIDENCE);
+    if ('minHandDetectionConfidence' in options) {
+      this.handDetectorGraphOptions.setMinDetectionConfidence(
+          options.minHandDetectionConfidence ?? DEFAULT_CONFIDENCE);
+    }
+
+    if ('minTrackingConfidence' in options) {
+      this.handLandmarkerGraphOptions.setMinTrackingConfidence(
+          options.minTrackingConfidence ?? DEFAULT_CONFIDENCE);
+    }
+
+    if ('minHandPresenceConfidence' in options) {
+      this.handLandmarksDetectorGraphOptions.setMinDetectionConfidence(
+          options.minHandPresenceConfidence ?? DEFAULT_CONFIDENCE);
+    }
 
     if (options.cannedGesturesClassifierOptions) {
       // Note that we have to support both JSPB and ProtobufJS and cannot
diff --git a/mediapipe/tasks/web/vision/gesture_recognizer/gesture_recognizer_test.ts b/mediapipe/tasks/web/vision/gesture_recognizer/gesture_recognizer_test.ts
index b2a2c0d72..2331f5e21 100644
--- a/mediapipe/tasks/web/vision/gesture_recognizer/gesture_recognizer_test.ts
+++ b/mediapipe/tasks/web/vision/gesture_recognizer/gesture_recognizer_test.ts
@@ -147,6 +147,18 @@ describe('GestureRecognizer', () => {
     ]);
   });
 
+  it('does not reset default values when not specified', async () => {
+    await gestureRecognizer.setOptions({minHandDetectionConfidence: 0.5});
+    await gestureRecognizer.setOptions({});
+    verifyGraph(gestureRecognizer, [
+      [
+        'handLandmarkerGraphOptions', 'handDetectorGraphOptions',
+        'minDetectionConfidence'
+      ],
+      0.5
+    ]);
+  });
+
   describe('setOptions()', () => {
     interface TestCase {
       optionPath: [keyof GestureRecognizerOptions, ...string[]];