diff --git a/docs/vertexai/services.rst b/docs/vertexai/services.rst
index 92ad7aacbe..12e47a0ffb 100644
--- a/docs/vertexai/services.rst
+++ b/docs/vertexai/services.rst
@@ -11,6 +11,11 @@ Vertex AI SDK
     :show-inheritance:
     :inherited-members:
 
+.. automodule:: vertexai.preview
+    :members:
+    :show-inheritance:
+    :inherited-members:
+
 .. automodule:: vertexai.preview.language_models
     :members:
     :show-inheritance: