diff --git a/components/style/values/computed/motion.rs b/components/style/values/computed/motion.rs
index 88a5b7c7280..e2565ff3468 100644
--- a/components/style/values/computed/motion.rs
+++ b/components/style/values/computed/motion.rs
@@ -23,8 +23,10 @@ fn is_auto_zero_angle(auto: &bool, angle: &Angle) -> bool {
     ComputeSquaredDistance,
     Copy,
     Debug,
+    Deserialize,
     MallocSizeOf,
     PartialEq,
+    Serialize,
     ToAnimatedZero,
     ToCss,
     ToResolvedValue,
diff --git a/components/style/values/generics/position.rs b/components/style/values/generics/position.rs
index 2742dd87913..a3552ea3eab 100644
--- a/components/style/values/generics/position.rs
+++ b/components/style/values/generics/position.rs
@@ -12,8 +12,10 @@
     ComputeSquaredDistance,
     Copy,
     Debug,
+    Deserialize,
     MallocSizeOf,
     PartialEq,
+    Serialize,
     SpecifiedValueInfo,
     ToAnimatedValue,
     ToAnimatedZero,
@@ -44,15 +46,18 @@ impl<H, V> Position<H, V> {
 /// A generic type for representing an `Auto | <position>`.
 /// This is used by <offset-anchor> for now.
 /// https://drafts.fxtf.org/motion-1/#offset-anchor-property
+/// cbindgen:private-default-tagged-enum-constructor=false
 #[derive(
     Animate,
     Clone,
     ComputeSquaredDistance,
     Copy,
     Debug,
+    Deserialize,
     MallocSizeOf,
     Parse,
     PartialEq,
+    Serialize,
     SpecifiedValueInfo,
     ToAnimatedZero,
     ToComputedValue,