diff --git a/src/a2a/compat/v0_3/types.py b/src/a2a/compat/v0_3/types.py
index 918a06b5..94b29780 100644
--- a/src/a2a/compat/v0_3/types.py
+++ b/src/a2a/compat/v0_3/types.py
@@ -274,7 +274,7 @@ class DataPart(A2ABaseModel):
     Represents a structured data segment (e.g., JSON) within a message or artifact.
     """
 
-    data: dict[str, Any]
+    data: Any
     """
     The structured data content.
     """