From c40630c3a0da1798e67d963e772c63d126afaf36 Mon Sep 17 00:00:00 2001
From: box-sdk-build <sdk-build@box.com>
Date: Wed, 1 Jul 2026 03:14:19 -0700
Subject: [PATCH] fix: Add support for additionalProperties with  in Python SDK
 (box/box-codegen#966)

---
 .codegen.json                       |  2 +-
 box_sdk_gen/internal/base_object.py | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/.codegen.json b/.codegen.json
index 56c1f5789..5fc06fe3f 100644
--- a/.codegen.json
+++ b/.codegen.json
@@ -1 +1 @@
-{ "engineHash": "ed5236c", "specHash": "131c54a", "version": "4.12.0" }
+{ "engineHash": "5560f9a", "specHash": "131c54a", "version": "4.12.0" }
diff --git a/box_sdk_gen/internal/base_object.py b/box_sdk_gen/internal/base_object.py
index 47c407323..f9ce7718e 100644
--- a/box_sdk_gen/internal/base_object.py
+++ b/box_sdk_gen/internal/base_object.py
@@ -81,6 +81,8 @@ def _deserialize(cls, key, value, annotation=None):
 
         if get_origin(annotation) == list:
             return cls._deserialize_list(key, value, annotation)
+        elif get_origin(annotation) == dict:
+            return cls._deserialize_dict(key, value, annotation)
         elif get_origin(annotation) == Union:
             return cls._deserialize_union(key, value, annotation)
         elif isinstance(annotation, EnumMeta):
@@ -104,6 +106,17 @@ def _deserialize_list(cls, key, value, annotation: list):
         except Exception:
             return value
 
+    @classmethod
+    def _deserialize_dict(cls, key, value, annotation):
+        try:
+            args = get_args(annotation)
+            if len(args) < 2:
+                return value
+            value_type = args[1]
+            return {k: cls._deserialize(key, v, value_type) for k, v in value.items()}
+        except Exception:
+            return value
+
     @classmethod
     def _deserialize_union(cls, key, value, annotation):
         try: