diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3aec524..eadf90e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## v3.8.0
 ### Features
 * Add support for VRChat constraints.
+* Add support for FinalIK components with the `Delete Unused GameObjects` option.
 
 ## v3.7.4
 ### Bug Fixes
diff --git a/Editor/d4rkAvatarOptimizer.cs b/Editor/d4rkAvatarOptimizer.cs
index 1f9a24c..de6fccd 100644
--- a/Editor/d4rkAvatarOptimizer.cs
+++ b/Editor/d4rkAvatarOptimizer.cs
@@ -2885,6 +2885,14 @@ private HashSet<Transform> FindAllMovingTransforms()
             transforms.Add(constraint.transform);
         }
 
+        var finalIKScripts = GetComponentsInChildren<Behaviour>(true)
+            .Where(b => !alwaysDisabledComponents.Contains(b))
+            .Where(b => b.GetType().FullName.StartsWithSimple("RootMotion.FinalIK")).ToList();
+        foreach (var finalIKScript in finalIKScripts)
+        {
+            transforms.UnionWith(FindReferencedTransforms(finalIKScript));
+        }
+
         var headChopType = Type.GetType("VRC.SDK3.Avatars.Components.VRCHeadChop, VRCSDK3A");
         if (headChopType != null) {
             foreach (var headChop in GetComponentsInChildren(headChopType, true)) {