diff --git a/Cargo.toml b/Cargo.toml
index 9c419e339..62deac321 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,6 +19,7 @@ hashbrown = "0.15"
 hashlink = "0.10"
 indexmap = "2"
 intrusive-collections = "0.9.7"
+ordermap = "1"
 parking_lot = "0.12"
 portable-atomic = "1"
 rustc-hash = "2"
diff --git a/src/update.rs b/src/update.rs
index d95bd13a9..65a10df07 100644
--- a/src/update.rs
+++ b/src/update.rs
@@ -340,6 +340,27 @@ where
     }
 }
 
+unsafe impl<K, V, S> Update for ordermap::OrderMap<K, V, S>
+where
+    K: Update + Eq + Hash,
+    V: Update,
+    S: BuildHasher,
+{
+    unsafe fn maybe_update(old_pointer: *mut Self, new_map: Self) -> bool {
+        maybe_update_map!(old_pointer, new_map)
+    }
+}
+
+unsafe impl<K, S> Update for ordermap::OrderSet<K, S>
+where
+    K: Update + Eq + Hash,
+    S: BuildHasher,
+{
+    unsafe fn maybe_update(old_pointer: *mut Self, new_set: Self) -> bool {
+        maybe_update_set!(old_pointer, new_set)
+    }
+}
+
 unsafe impl<K, V> Update for BTreeMap<K, V>
 where
     K: Update + Eq + Ord,