diff --git a/Cargo.lock b/Cargo.lock
index ee77709da883..5bca4f79fd17 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6471,7 +6471,7 @@ dependencies = [
 [[package]]
 name = "webxr"
 version = "0.0.1"
-source = "git+https://github.com/servo/webxr#a73b150f1e1a946fd90bd1ccf0056e35c3eef0d2"
+source = "git+https://github.com/servo/webxr#3f754a11eb3e9771f6020ec5a25ae94ed1e11f07"
 dependencies = [
  "android_injected_glue",
  "bindgen",
@@ -6494,7 +6494,7 @@ dependencies = [
 [[package]]
 name = "webxr-api"
 version = "0.0.1"
-source = "git+https://github.com/servo/webxr#a73b150f1e1a946fd90bd1ccf0056e35c3eef0d2"
+source = "git+https://github.com/servo/webxr#3f754a11eb3e9771f6020ec5a25ae94ed1e11f07"
 dependencies = [
  "euclid",
  "ipc-channel",
diff --git a/components/script/dom/xrframe.rs b/components/script/dom/xrframe.rs
index 68896b21de6d..fbb6890baf3f 100644
--- a/components/script/dom/xrframe.rs
+++ b/components/script/dom/xrframe.rs
@@ -85,11 +85,16 @@ impl XRFrameMethods for XRFrame {
         } else {
             return Ok(None);
         };
+        let viewer_pose = if let Some(pose) = self.data.pose.as_ref() {
+            pose
+        } else {
+            return Ok(None);
+        };
         Ok(Some(XRViewerPose::new(
             &self.global(),
             &self.session,
             pose,
-            &self.data.views,
+            viewer_pose,
         )))
     }
 
diff --git a/components/script/dom/xrreferencespace.rs b/components/script/dom/xrreferencespace.rs
index 3d05a59564ca..0936b33fe6dc 100644
--- a/components/script/dom/xrreferencespace.rs
+++ b/components/script/dom/xrreferencespace.rs
@@ -113,7 +113,7 @@ impl XRReferenceSpace {
                 // get_viewer_pose(eye_level) = get_pose(eye_level).inverse() * get_pose(viewer_space)
                 //                            = I * viewer_pose
                 //                            = viewer_pose
-                let viewer_pose: ApiViewerPose = cast_transform(base_pose.transform?);
+                let viewer_pose: ApiViewerPose = cast_transform(base_pose.pose.as_ref()?.transform);
 
                 // we get viewer poses in eye-level space by default
                 Some(viewer_pose)
@@ -122,7 +122,7 @@ impl XRReferenceSpace {
                 // get_viewer_pose(floor_level) = get_pose(floor_level).inverse() * get_pose(viewer_space)
                 //                            = floor_to_native.inverse() * viewer_pose
                 //                            = native_to_floor * viewer_pose
-                let viewer_pose = base_pose.transform?;
+                let viewer_pose = base_pose.pose.as_ref()?.transform;
                 let native_to_floor = self
                     .upcast::<XRSpace>()
                     .session()
@@ -171,7 +171,9 @@ impl XRReferenceSpace {
                     .with_session(|s| s.floor_transform())?;
                 Some(cast_transform(native_to_floor.inverse()))
             },
-            XRReferenceSpaceType::Viewer => base_pose.transform.map(cast_transform),
+            XRReferenceSpaceType::Viewer => {
+                Some(cast_transform(base_pose.pose.as_ref()?.transform))
+            },
             _ => unimplemented!(),
         }
     }
diff --git a/components/script/dom/xrviewerpose.rs b/components/script/dom/xrviewerpose.rs
index b55129b8daf0..10c212c5ada4 100644
--- a/components/script/dom/xrviewerpose.rs
+++ b/components/script/dom/xrviewerpose.rs
@@ -17,7 +17,7 @@ use dom_struct::dom_struct;
 use js::conversions::ToJSValConvertible;
 use js::jsapi::Heap;
 use js::jsval::{JSVal, UndefinedValue};
-use webxr_api::Views;
+use webxr_api::{ViewerPose, Views};
 
 #[dom_struct]
 pub struct XRViewerPose {
@@ -39,11 +39,11 @@ impl XRViewerPose {
         global: &GlobalScope,
         session: &XRSession,
         pose: ApiViewerPose,
-        frame_views: &Views,
+        viewer_pose: &ViewerPose,
     ) -> DomRoot<XRViewerPose> {
         let _ac = enter_realm(&*global);
         rooted_vec!(let mut views);
-        match frame_views {
+        match &viewer_pose.views {
             Views::Inline => views.push(XRView::new(
                 global,
                 session,