diff --git a/mediapipe/tasks/web/components/containers/bounding_box.d.ts b/mediapipe/tasks/web/components/containers/bounding_box.d.ts
index 77f2837d1..85811f443 100644
--- a/mediapipe/tasks/web/components/containers/bounding_box.d.ts
+++ b/mediapipe/tasks/web/components/containers/bounding_box.d.ts
@@ -24,4 +24,10 @@ export declare interface BoundingBox {
   width: number;
   /** The height of the bounding box, in pixels. */
   height: number;
+  /**
+   * Angle of rotation of the original non-rotated box around the top left
+   * corner of the original non-rotated box, in clockwise degrees from the
+   * horizontal.
+   */
+  angle: number;
 }
diff --git a/mediapipe/tasks/web/components/processors/detection_result.test.ts b/mediapipe/tasks/web/components/processors/detection_result.test.ts
index 0fa8156ba..8e3e413e1 100644
--- a/mediapipe/tasks/web/components/processors/detection_result.test.ts
+++ b/mediapipe/tasks/web/components/processors/detection_result.test.ts
@@ -58,7 +58,7 @@ describe('convertFromDetectionProto()', () => {
         categoryName: 'foo',
         displayName: 'bar',
       }],
-      boundingBox: {originX: 1, originY: 2, width: 3, height: 4},
+      boundingBox: {originX: 1, originY: 2, width: 3, height: 4, angle: 0},
       keypoints: [{
         x: 5,
         y: 6,
@@ -85,7 +85,7 @@ describe('convertFromDetectionProto()', () => {
         categoryName: '',
         displayName: '',
       }],
-      boundingBox: {originX: 0, originY: 0, width: 0, height: 0},
+      boundingBox: {originX: 0, originY: 0, width: 0, height: 0, angle: 0},
       keypoints: []
     });
   });
diff --git a/mediapipe/tasks/web/components/processors/detection_result.ts b/mediapipe/tasks/web/components/processors/detection_result.ts
index 4999ed31b..6cb5e6230 100644
--- a/mediapipe/tasks/web/components/processors/detection_result.ts
+++ b/mediapipe/tasks/web/components/processors/detection_result.ts
@@ -42,7 +42,8 @@ export function convertFromDetectionProto(source: DetectionProto): Detection {
       originX: boundingBox.getXmin() ?? 0,
       originY: boundingBox.getYmin() ?? 0,
       width: boundingBox.getWidth() ?? 0,
-      height: boundingBox.getHeight() ?? 0
+      height: boundingBox.getHeight() ?? 0,
+      angle: 0.0,
     };
   }
 
diff --git a/mediapipe/tasks/web/vision/face_detector/face_detector_test.ts b/mediapipe/tasks/web/vision/face_detector/face_detector_test.ts
index dfe84bb17..049edefd6 100644
--- a/mediapipe/tasks/web/vision/face_detector/face_detector_test.ts
+++ b/mediapipe/tasks/web/vision/face_detector/face_detector_test.ts
@@ -191,7 +191,7 @@ describe('FaceDetector', () => {
         categoryName: '',
         displayName: '',
       }],
-      boundingBox: {originX: 0, originY: 0, width: 0, height: 0},
+      boundingBox: {originX: 0, originY: 0, width: 0, height: 0, angle: 0},
       keypoints: []
     });
   });
diff --git a/mediapipe/tasks/web/vision/object_detector/object_detector_test.ts b/mediapipe/tasks/web/vision/object_detector/object_detector_test.ts
index 9c63eaba1..6437216b1 100644
--- a/mediapipe/tasks/web/vision/object_detector/object_detector_test.ts
+++ b/mediapipe/tasks/web/vision/object_detector/object_detector_test.ts
@@ -210,7 +210,7 @@ describe('ObjectDetector', () => {
         categoryName: '',
         displayName: '',
       }],
-      boundingBox: {originX: 0, originY: 0, width: 0, height: 0},
+      boundingBox: {originX: 0, originY: 0, width: 0, height: 0, angle: 0},
       keypoints: []
     });
   });