Update documentation
diff --git a/docs/dyn/drive_v3.permissions.html b/docs/dyn/drive_v3.permissions.html
index d2b3764..160e6d5 100644
--- a/docs/dyn/drive_v3.permissions.html
+++ b/docs/dyn/drive_v3.permissions.html
@@ -87,7 +87,7 @@
   <code><a href="#list">list(fileId)</a></code></p>
 <p class="firstline">Lists a file's permissions.</p>
 <p class="toc_element">
-  <code><a href="#update">update(fileId, permissionId, body, transferOwnership=None)</a></code></p>
+  <code><a href="#update">update(fileId, permissionId, body, removeExpiration=None, transferOwnership=None)</a></code></p>
 <p class="firstline">Updates a permission with patch semantics.</p>
 <h3>Method Details</h3>
 <div class="method">
@@ -111,6 +111,7 @@
       # - writer
       # - commenter
       # - reader
+  "expirationTime": "A String", # The time at which this permission will expire (RFC 3339 date-time).
   "type": "A String", # The type of the grantee. Valid values are:
       # - user
       # - group
@@ -138,6 +139,7 @@
         # - writer
         # - commenter
         # - reader
+    "expirationTime": "A String", # The time at which this permission will expire (RFC 3339 date-time).
     "type": "A String", # The type of the grantee. Valid values are:
         # - user
         # - group
@@ -180,6 +182,7 @@
         # - writer
         # - commenter
         # - reader
+    "expirationTime": "A String", # The time at which this permission will expire (RFC 3339 date-time).
     "type": "A String", # The type of the grantee. Valid values are:
         # - user
         # - group
@@ -214,6 +217,7 @@
             # - writer
             # - commenter
             # - reader
+        "expirationTime": "A String", # The time at which this permission will expire (RFC 3339 date-time).
         "type": "A String", # The type of the grantee. Valid values are:
             # - user
             # - group
@@ -226,7 +230,7 @@
 </div>
 
 <div class="method">
-    <code class="details" id="update">update(fileId, permissionId, body, transferOwnership=None)</code>
+    <code class="details" id="update">update(fileId, permissionId, body, removeExpiration=None, transferOwnership=None)</code>
   <pre>Updates a permission with patch semantics.
 
 Args:
@@ -247,6 +251,7 @@
       # - writer
       # - commenter
       # - reader
+  "expirationTime": "A String", # The time at which this permission will expire (RFC 3339 date-time).
   "type": "A String", # The type of the grantee. Valid values are:
       # - user
       # - group
@@ -255,6 +260,7 @@
   "id": "A String", # The ID of this permission. This is a unique identifier for the grantee, and is published in User resources as permissionId.
 }
 
+  removeExpiration: boolean, Whether to remove the expiration date.
   transferOwnership: boolean, Whether to transfer ownership to the specified user and downgrade the current owner to a writer. This parameter is required as an acknowledgement of the side effect.
 
 Returns:
@@ -272,6 +278,7 @@
         # - writer
         # - commenter
         # - reader
+    "expirationTime": "A String", # The time at which this permission will expire (RFC 3339 date-time).
     "type": "A String", # The type of the grantee. Valid values are:
         # - user
         # - group