diff --git a/mozaik_membership_rest/pydantic_models/membership_request.py b/mozaik_membership_rest/pydantic_models/membership_request.py
index 5e5d0c296..28d329f1a 100644
--- a/mozaik_membership_rest/pydantic_models/membership_request.py
+++ b/mozaik_membership_rest/pydantic_models/membership_request.py
@@ -4,10 +4,17 @@
 from datetime import datetime
 from typing import List
 
+import pydantic
 from extendable_pydantic import ExtendableModelMeta
 from pydantic import BaseModel
 
 
+class MembershipRequestAttachment(BaseModel, metaclass=ExtendableModelMeta):
+    name: str
+    mimetype: str
+    content: str = pydantic.Field(..., title="Content encoded in base64")
+
+
 class MembershipRequest(BaseModel, metaclass=ExtendableModelMeta):
     lastname: str
     firstname: str
@@ -53,3 +60,4 @@ class MembershipRequest(BaseModel, metaclass=ExtendableModelMeta):
     force_auto_validate: bool = False
     auto_generate_reference: bool = False
     auto_validate_after_payment: bool = False
+    attachments: List[MembershipRequestAttachment] = []
diff --git a/mozaik_membership_rest/services/membership_request.py b/mozaik_membership_rest/services/membership_request.py
index 3797dc88c..7ada7f8ef 100644
--- a/mozaik_membership_rest/services/membership_request.py
+++ b/mozaik_membership_rest/services/membership_request.py
@@ -181,6 +181,19 @@ def _get_protected_values(self, vals):
                 protected_values[field_name] = field_value[0][2]
         return protected_values
 
+    def _create_membership_request_attachments(self, mr, attachments):
+        for attachment in attachments:
+            self.env["ir.attachment"].sudo().create(
+                {
+                    "name": attachment["name"],
+                    "type": "binary",
+                    "mimetype": attachment["mimetype"],
+                    "datas": attachment["content"],
+                    "res_model": "membership.request",
+                    "res_id": mr.id,
+                }
+            )
+
     def _create_membership_request(self, membership_request):
         vals = self._validate_membership_request_input(membership_request)
         protected_values = self._get_protected_values(vals)
@@ -197,6 +210,9 @@ def _create_membership_request(self, membership_request):
             .with_context(mode="pre_process", protected_values=protected_values)
             .create(vals)
         )
+        attachments = membership_request.dict().get("attachments", False)
+        if attachments:
+            self._create_membership_request_attachments(mr, attachments)
         # We validate the request if asked, and force auto-validation if asked
         mr._auto_validate_may_be_forced(membership_request.auto_validate)
         return mr