diff --git a/src/Mpociot/Versionable/Version.php b/src/Mpociot/Versionable/Version.php
index d145eb1..5509547 100644
--- a/src/Mpociot/Versionable/Version.php
+++ b/src/Mpociot/Versionable/Version.php
@@ -89,7 +89,7 @@ public function diff(Version $againstVersion = null)
         $model = $this->getModel();
         $diff  = $againstVersion ? $againstVersion->getModel() : $this->versionable()->withTrashed()->first()->currentVersion()->getModel();
 
-        $diffArray = array_diff_assoc($diff->getAttributes(), $model->getAttributes());
+        $diffArray = $this->arrayDiffAssocRecursive($diff->getAttributes(), $model->getAttributes());
 
         if (isset( $diffArray[ $model->getCreatedAtColumn() ] )) {
             unset( $diffArray[ $model->getCreatedAtColumn() ] );
@@ -104,4 +104,33 @@ public function diff(Version $againstVersion = null)
         return $diffArray;
     }
 
+    /**
+     * Recursive version of array_diff_assoc.
+     *
+     * @param $array1
+     * @param $array2
+     *
+     * @return array
+     */
+    public function arrayDiffAssocRecursive($array1, $array2)
+    {
+        $difference = [];
+
+        foreach ($array1 as $key => $value) {
+            if (is_array($value)) {
+                if (isset($array2[$key])) {
+                    $new_diff = $this->arrayDiffAssocRecursive($value, $array2[$key]);
+                    if (! empty($new_diff)) {
+                        $difference[$key] = $new_diff;
+                    }
+                } else {
+                    $difference[$key] = $value;
+                }
+            } elseif (! in_array($value, $array2, true)) { 
+                $difference[$key] = $value;
+            }
+        }
+
+        return $difference;
+    }
 }
diff --git a/src/Mpociot/Versionable/VersionableTrait.php b/src/Mpociot/Versionable/VersionableTrait.php
index 9be633a..9235ed3 100644
--- a/src/Mpociot/Versionable/VersionableTrait.php
+++ b/src/Mpociot/Versionable/VersionableTrait.php
@@ -176,7 +176,7 @@ protected function versionablePostSave()
             
             $versionedHiddenFields = $this->versionedHiddenFields ?? [];
             $this->makeVisible($versionedHiddenFields);
-            $version->model_data       = serialize($this->attributesToArray());
+            $version->model_data       = serialize($this->attributesToVersion());
             $this->makeHidden($versionedHiddenFields);
 
             if (!empty( $this->reason )) {
@@ -189,6 +189,19 @@ protected function versionablePostSave()
         }
     }
 
+    /**
+     * Wrapper for getting attributes to version, respecting $dontVersionFields.
+     *
+     * @return array
+     */
+    protected function attributesToVersion()
+    {
+        $attributes = $this->attributesToArray();
+        $ignore = $this->dontVersionFields ?? [];
+
+        return collect($attributes)->except($ignore)->all();
+    }
+
     /**
      * Delete old versions of this model when the reach a specific count.
      *