diff --git a/models/core/message.py b/models/core/message.py
index 8c1bdd6..d0f2aa8 100644
--- a/models/core/message.py
+++ b/models/core/message.py
@@ -170,7 +170,7 @@ class CoreMessageModel(BaseModel):
         frozen = True
     )
 
-    snippet: str = Field(
+    snippet: str | None = Field(
         description = "a truncated version of the actual textual content of the message",
         frozen = False
     )