diff --git a/src/Fields/BelongsToMany.php b/src/Fields/BelongsToMany.php
index b8baf45e..50c1a8cf 100644
--- a/src/Fields/BelongsToMany.php
+++ b/src/Fields/BelongsToMany.php
@@ -83,9 +83,10 @@ public function fields(Request $request): array
                         );
                     });
             })->hydrate(function (Request $request, Pivot $model, mixed $value): void {
-                $relation = $this->getRelation($model->pivotParent);
-
-                $model->setAttribute($relation->getRelatedPivotKeyName(), $value);
+                $model->setAttribute(
+                    $this->getRelation($model->pivotParent)->getRelatedPivotKeyName(),
+                    $value
+                );
             })->display(function (Model $model): ?string {
                 return $this->resolveDisplay($model);
             }),
diff --git a/src/Fields/MorphToMany.php b/src/Fields/MorphToMany.php
index 240b112d..525b0602 100644
--- a/src/Fields/MorphToMany.php
+++ b/src/Fields/MorphToMany.php
@@ -43,12 +43,10 @@ public function fields(Request $request): array
                             $this->getRelation($model->pivotParent)->select($query->getModel()->getQualifiedKeyName())
                         );
                     });
-            })->hydrate(function (Request $request, MorphPivot $model): void {
-                $relation = $this->getRelation($model->pivotParent);
-
+            })->hydrate(function (Request $request, MorphPivot $model, mixed $value): void {
                 $model->setAttribute(
-                    $relation->getRelatedPivotKeyName(),
-                    $model->related->getAttribute($relation->getRelatedKeyName())
+                    $this->getRelation($model->pivotParent)->getRelatedPivotKeyName(),
+                    $value
                 );
             })->display(function (Model $model): mixed {
                 return $this->resolveDisplay($model);