diff --git a/geo/src/algorithm/bool_ops/mod.rs b/geo/src/algorithm/bool_ops/mod.rs
index c5bfa3a12..23f6a0b65 100644
--- a/geo/src/algorithm/bool_ops/mod.rs
+++ b/geo/src/algorithm/bool_ops/mod.rs
@@ -5,7 +5,9 @@ mod tests;
 pub use i_overlay_integration::BoolOpsNum;
 
 use crate::geometry::{LineString, MultiLineString, MultiPolygon, Polygon};
-use rstar::{primitives::CachedEnvelope, ParentNode, RTree, RTreeNode, RTreeObject};
+use rstar::{
+    primitives::CachedEnvelope, primitives::ObjectRef, ParentNode, RTree, RTreeNode, RTreeObject,
+};
 
 /// Boolean Operations on geometry.
 ///
@@ -228,21 +230,6 @@ impl<T: BoolOpsNum> BooleanOps for MultiPolygon<T> {
     }
 }
 
-// This struct and its RTReeObject impl allow construction of an R tree containing short-lived
-// references to the original objects.
-struct RTreeObjectRef<'a, T>(&'a T);
-
-impl<'a, T> RTreeObject for RTreeObjectRef<'a, T>
-where
-    T: RTreeObject,
-{
-    type Envelope = T::Envelope;
-
-    fn envelope(&self) -> Self::Envelope {
-        self.0.envelope()
-    }
-}
-
 impl<'a, T, Boppable, BoppableCollection> UnaryUnion for &'a BoppableCollection
 where
     T: BoolOpsNum,
@@ -255,9 +242,9 @@ where
         // these three functions drive the union operation
         let init = || MultiPolygon::<T>::new(vec![]);
         let fold = |mut accum: MultiPolygon<T>,
-                    poly: &CachedEnvelope<RTreeObjectRef<'a, Boppable>>|
+                    poly: &CachedEnvelope<ObjectRef<'a, Boppable>>|
          -> MultiPolygon<T> {
-            accum = accum.union(poly.0);
+            accum = accum.union(&***poly);
             accum
         };
         let reduce = |accum1: MultiPolygon<T>, accum2: MultiPolygon<T>| -> MultiPolygon<T> {
@@ -265,7 +252,7 @@ where
         };
         let rtree = RTree::bulk_load(
             self.into_iter()
-                .map(|p| CachedEnvelope::new(RTreeObjectRef(p)))
+                .map(|p| CachedEnvelope::new(ObjectRef::new(p)))
                 .collect(),
         );
         bottom_up_fold_reduce(&rtree, init, fold, reduce)