diff --git a/validation.md b/validation.md
index ef18ae4388..11ff1849f5 100644
--- a/validation.md
+++ b/validation.md
@@ -940,7 +940,25 @@ After defining this value, the validation rule will produce the following error
 ```text
 The credit card number field is required when payment type is credit card.
 ```
+### nullable
 
+The `nullable` rule allows a field to be `null`. If the field is `null`, no other validation rules will be applied to it.
+
+```php
+$request->validate([
+    'middle_name' => ['nullable', 'string', 'max:50'],
+]);
+```
+### prohibited_if
+
+The `prohibited_if` rule prohibits a field from being present if another specified field has a certain value. This is useful for creating dynamic forms where some fields should be excluded based on the values of others.
+
+```php
+$request->validate([
+    'company_name' => 'prohibited_if:is_freelancer,true',
+    'is_freelancer' => 'boolean',
+]);
+```
 <a name="available-validation-rules"></a>
 ## Available Validation Rules