diff --git a/src/collective/volto/formsupport/restapi/deserializer/__init__.py b/src/collective/volto/formsupport/restapi/deserializer/__init__.py
index ce8c4fed..b1b8e6c9 100644
--- a/src/collective/volto/formsupport/restapi/deserializer/__init__.py
+++ b/src/collective/volto/formsupport/restapi/deserializer/__init__.py
@@ -22,8 +22,15 @@ def _process_data(
         self,
         data,
     ):
+        self._update_validations(data)
         return data
 
+    def _update_validations(self, data):
+        for field in data.get("subblocks"):
+            if field.get("field_type") not in ["text", "textarea", "from"]:
+                field["validations"] = []
+                field["validationSettings"] = {}
+
 
 @implementer(IBlockFieldDeserializationTransformer)
 @adapter(IBlocks, IBrowserRequest)