Refresh docs
diff --git a/docs/dyn/books_v1.layers.html b/docs/dyn/books_v1.layers.html
index 717951e..df07137 100644
--- a/docs/dyn/books_v1.layers.html
+++ b/docs/dyn/books_v1.layers.html
@@ -117,6 +117,7 @@
     ],
     "contentVersion": "A String", # The content version this resource is for.
     "layerId": "A String", # The layer id for this summary.
+    "volumeAnnotationsVersion": "A String", # The current version of this layer's volume annotations. Note that this version applies only to the data in the books.layers.volumeAnnotations.* responses. The actual annotation data is versioned separately.
     "annotationsDataLink": "A String", # Link to get data for this annotation.
     "selfLink": "A String", # URL to this resource.
   }</pre>
@@ -152,6 +153,7 @@
         ],
         "contentVersion": "A String", # The content version this resource is for.
         "layerId": "A String", # The layer id for this summary.
+        "volumeAnnotationsVersion": "A String", # The current version of this layer's volume annotations. Note that this version applies only to the data in the books.layers.volumeAnnotations.* responses. The actual annotation data is versioned separately.
         "annotationsDataLink": "A String", # Link to get data for this annotation.
         "selfLink": "A String", # URL to this resource.
       },