diff --git a/google/genai/_interactions/types/content_delta.py b/google/genai/_interactions/types/content_delta.py
index 570fe6073..3774611e4 100644
--- a/google/genai/_interactions/types/content_delta.py
+++ b/google/genai/_interactions/types/content_delta.py
@@ -99,7 +99,7 @@ class DeltaDocumentDelta(BaseModel):
 
     data: Optional[str] = None
 
-    mime_type: Optional[Literal["application/pdf"]] = None
+    mime_type: Optional[Literal["application/pdf", "text/html"]] = None
 
     uri: Optional[str] = None
 
diff --git a/google/genai/_interactions/types/document_content.py b/google/genai/_interactions/types/document_content.py
index 846f7b568..9b663139b 100644
--- a/google/genai/_interactions/types/document_content.py
+++ b/google/genai/_interactions/types/document_content.py
@@ -31,7 +31,7 @@ class DocumentContent(BaseModel):
     data: Optional[str] = None
     """The document content."""
 
-    mime_type: Optional[Literal["application/pdf"]] = None
+    mime_type: Optional[Literal["application/pdf", "text/html"]] = None
     """The mime type of the document."""
 
     uri: Optional[str] = None
diff --git a/google/genai/_interactions/types/document_content_param.py b/google/genai/_interactions/types/document_content_param.py
index f8b4c6cb9..1e6a87cf5 100644
--- a/google/genai/_interactions/types/document_content_param.py
+++ b/google/genai/_interactions/types/document_content_param.py
@@ -35,7 +35,7 @@ class DocumentContentParam(TypedDict, total=False):
     data: Annotated[Union[str, Base64FileInput], PropertyInfo(format="base64")]
     """The document content."""
 
-    mime_type: Literal["application/pdf"]
+    mime_type: Literal["application/pdf", "text/html"]
     """The mime type of the document."""
 
     uri: str