diff --git a/protos/mocap/mocap.proto b/protos/mocap/mocap.proto
index 5b721f1dd..94d7a5115 100644
--- a/protos/mocap/mocap.proto
+++ b/protos/mocap/mocap.proto
@@ -15,6 +15,8 @@ option java_outer_classname = "MocapProto";
 service MocapService {
     // Send Global position/attitude estimate from a vision source.
     rpc SetVisionPositionEstimate(SetVisionPositionEstimateRequest) returns(SetVisionPositionEstimateResponse) { option (mavsdk.options.async_type) = SYNC; }
+    // Send Global speed estimate from a vision source.
+    rpc SetVisionSpeedEstimate(SetVisionSpeedEstimateRequest) returns(SetVisionSpeedEstimateResponse) { option (mavsdk.options.async_type) = SYNC; }
     // Send motion capture attitude and position.
     rpc SetAttitudePositionMocap(SetAttitudePositionMocapRequest) returns(SetAttitudePositionMocapResponse) { option (mavsdk.options.async_type) = SYNC; }
     // Send odometry information with an external interface.
@@ -28,6 +30,13 @@ message SetVisionPositionEstimateResponse {
     MocapResult mocap_result = 1;
 }
 
+message SetVisionSpeedEstimateRequest {
+    VisionSpeedEstimate vision_speed_estimate = 1; // The vision speed estimate
+}
+message SetVisionSpeedEstimateResponse {
+    MocapResult mocap_result = 1;
+}
+
 message SetAttitudePositionMocapRequest {
     AttitudePositionMocap attitude_position_mocap = 1; // The attitude and position data
 }
@@ -105,6 +114,13 @@ message VisionPositionEstimate {
     Covariance pose_covariance = 4; // Pose cross-covariance matrix.
 }
 
+// Global speed estimate from a vision source.
+message VisionSpeedEstimate {
+    uint64 time_usec = 1; // PositionBody frame timestamp UNIX Epoch time (0 to use Backend timestamp)
+    SpeedBody speed_body = 2; // Global speed (m/s)
+    Covariance speed_covariance = 3; // Linear velocity cross-covariance matrix.
+}
+
 // Motion capture attitude and position
 message AttitudePositionMocap {
     uint64 time_usec = 1; // PositionBody frame timestamp UNIX Epoch time (0 to use Backend timestamp)