diff --git a/jsonapi_pydantic/__init__.py b/jsonapi_pydantic/__init__.py
index c6392ee..058fd9d 100644
--- a/jsonapi_pydantic/__init__.py
+++ b/jsonapi_pydantic/__init__.py
@@ -1,5 +1,5 @@
 from jsonapi_pydantic import constants, v1_0
 
-__version__ = "0.1.2"
+__version__ = "0.1.3"
 
 __all__ = ["constants", "v1_0"]
diff --git a/jsonapi_pydantic/v1_0/resource/resource.py b/jsonapi_pydantic/v1_0/resource/resource.py
index 892d86e..ed37ee7 100644
--- a/jsonapi_pydantic/v1_0/resource/resource.py
+++ b/jsonapi_pydantic/v1_0/resource/resource.py
@@ -23,10 +23,14 @@ class Resource(BaseModel):
 
     @root_validator
     def check_all_values(cls, values: dict) -> dict:
+        attributes, relationships = values.get("attributes"), values.get("relationships")
+        if not attributes and not relationships:
+            return values
+
         # More about these restrictions: https://jsonapi.org/format/#document-resource-object-fields
         try:
-            attributes = dict(values.get("attributes"))
-            relationships = dict(values.get("relationships"))
+            attributes = dict(attributes) if attributes else attributes
+            relationships = dict(relationships) if relationships else relationships
         except (ValueError, TypeError):
             raise ValueError("Attributes and relationships must be json objects.")
 
diff --git a/pyproject.toml b/pyproject.toml
index f924eaf..445d93f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "jsonapi-pydantic"
-version = "0.1.2"
+version = "0.1.3"
 description = "JSON:API implementation with pydantic."
 
 authors = ["impocode <impocode@impocode.com>"]