diff --git a/aruco_pose/README.md b/aruco_pose/README.md
index 6ee2e4bc..1e899068 100644
--- a/aruco_pose/README.md
+++ b/aruco_pose/README.md
@@ -44,6 +44,7 @@ It's recommended to run it within the same nodelet manager with the camera nodel
 * `~length` (*double*) – markers' sides length
 * `~length_override` (*map*) – lengths of markers with specified ids
 * `~known_vertical` (*string*) – known vertical (Z axis) of all the markers as a frame
+* `~flip_vertical` – flip vertical vector
 
 ### Topics
 
@@ -72,6 +73,7 @@ It's recommended to run it within the same nodelet manager with the camera nodel
 * `~map` – path to text file with markers list
 * `~frame_id` – published frame id (default: `aruco_map`)
 * `~known_vertical` – known vertical (Z axis) of markers map as a frame
+* `~flip_vertical` – flip vertical vector
 * `~image_width` – debug image width (default: 2000)
 * `~image_height` – debug image height (default: 2000)
 * `~image_margin` – debug image margin (default: 200)