diff --git a/modelcontextprotocol/server.py b/modelcontextprotocol/server.py
index 515adfd..1aef447 100644
--- a/modelcontextprotocol/server.py
+++ b/modelcontextprotocol/server.py
@@ -600,6 +600,30 @@ def update_assets_tool(
                 "term_guids": ["term-guid-to-remove"]
             }]
         )
+
+        # Add warning announcement to an asset
+        update_assets_tool(
+            assets={
+                "guid": "abc-123",
+                "name": "sales_data",
+                "type_name": "Table",
+                "qualified_name": "default/snowflake/db/schema/sales_data"
+            },
+            attribute_name="announcement",
+            attribute_values=[{
+                "announcement_type": "WARNING",
+                "announcement_title": "Data Quality Issue",
+                "announcement_message": "Missing records for Q4 2024. ETL team investigating."
+            }]
+        )
+
+        # Remove announcement
+        update_assets_tool(
+            assets={"guid": "abc-123", ...},
+            attribute_name="announcement",
+            attribute_values=[None]  # or [{}]
+        )
+
     """
     try:
         # Parse JSON parameters
@@ -627,6 +651,21 @@ def update_assets_tool(
                 CertificateStatus(val) for val in parsed_attribute_values
             ]
 
+        elif attr_enum == UpdatableAttribute.ANNOUNCEMENT:
+            # Validate announcement structure
+            for val in parsed_attribute_values:
+                if val and not isinstance(val, dict):
+                    raise ValueError(f"Announcement must be a dict, got {type(val)}")
+                if val and not all(
+                    k in val
+                    for k in [
+                        "announcement_type",
+                        "announcement_title",
+                        "announcement_message",
+                    ]
+                ):
+                    raise ValueError("Announcement must have type, title, and message")
+
         # Convert assets to UpdatableAsset objects
         if isinstance(parsed_assets, dict):
             updatable_assets = [UpdatableAsset(**parsed_assets)]
diff --git a/modelcontextprotocol/tools/__init__.py b/modelcontextprotocol/tools/__init__.py
index f9d18f6..08092dd 100644
--- a/modelcontextprotocol/tools/__init__.py
+++ b/modelcontextprotocol/tools/__init__.py
@@ -16,6 +16,8 @@
     Glossary,
     GlossaryCategory,
     GlossaryTerm,
+    Announcement,
+    AnnouncementType,
 )
 
 __all__ = [
@@ -34,4 +36,6 @@
     "Glossary",
     "GlossaryCategory",
     "GlossaryTerm",
+    "AnnouncementType",
+    "Announcement",
 ]
diff --git a/modelcontextprotocol/tools/assets.py b/modelcontextprotocol/tools/assets.py
index e6abf18..fb2e7d6 100644
--- a/modelcontextprotocol/tools/assets.py
+++ b/modelcontextprotocol/tools/assets.py
@@ -9,6 +9,8 @@
     TermOperations,
 )
 from pyatlan.model.assets import Readme, AtlasGlossaryTerm
+from pyatlan.model.core import Announcement as AtlanAnnouncement
+from pyatlan.model.enums import AnnouncementType as AtlanAnnouncementType
 from pyatlan.model.fluent_search import CompoundQuery, FluentSearch
 
 # Initialize logging
@@ -32,6 +34,10 @@ def update_assets(
             For certificateStatus, only VERIFIED, DRAFT, or DEPRECATED are allowed.
             For readme, the value must be a valid Markdown string.
             For term, the value must be a TermOperations object with operation and term_guids.
+            For announcement, each value should be a dict with:
+                - announcement_type: "INFORMATION", "WARNING", or "ISSUE"
+                - announcement_title: Title of the announcement
+                - announcement_message: Message content
 
     Returns:
         Dict[str, Any]: Dictionary containing:
@@ -155,8 +161,19 @@ def update_assets(
                     error_msg = f"Error updating terms on asset {updatable_asset.qualified_name}: {str(e)}"
                     logger.error(error_msg)
                     result["errors"].append(error_msg)
+            elif attribute_name == UpdatableAttribute.ANNOUNCEMENT:
+                announcement_data = attribute_values[index]
+                if not announcement_data:  # None or empty dict
+                    asset.remove_announcement()
+                else:
+                    announcement = AtlanAnnouncement(
+                        announcement_type=AtlanAnnouncementType[announcement_data["announcement_type"]],
+                        announcement_title=announcement_data["announcement_title"],
+                        announcement_message=announcement_data["announcement_message"]
+                    )
+                    asset.set_announcement(announcement)
+                assets.append(asset)
             else:
-                # Regular attribute update flow
                 setattr(asset, attribute_name.value, attribute_values[index])
                 assets.append(asset)
 
diff --git a/modelcontextprotocol/tools/models.py b/modelcontextprotocol/tools/models.py
index 95bd048..de7ffd7 100644
--- a/modelcontextprotocol/tools/models.py
+++ b/modelcontextprotocol/tools/models.py
@@ -19,6 +19,7 @@ class UpdatableAttribute(str, Enum):
     CERTIFICATE_STATUS = "certificate_status"
     README = "readme"
     TERM = "term"
+    ANNOUNCEMENT = "announcement"
 
 
 class TermOperation(str, Enum):
@@ -73,3 +74,19 @@ class GlossaryTerm(BaseModel):
     user_description: Optional[str] = None
     certificate_status: Optional[CertificateStatus] = None
     category_guids: Optional[List[str]] = None
+
+
+class AnnouncementType(str, Enum):
+    """Enum for announcement types."""
+
+    INFORMATION = "INFORMATION"
+    WARNING = "WARNING"
+    ISSUE = "ISSUE"
+
+
+class Announcement(BaseModel):
+    """Class representing an announcement."""
+
+    announcement_type: AnnouncementType
+    announcement_title: str
+    announcement_message: str