diff --git a/google-drive.cabal b/google-drive.cabal
--- a/google-drive.cabal
+++ b/google-drive.cabal
@@ -1,5 +1,5 @@
 Name:                   google-drive
-Version:                0.3.0
+Version:                0.3.1
 Author:                 Pat Brisbin <pbrisbin@gmail.com>
 Maintainer:             Pat Brisbin <pbrisbin@gmail.com>
 License:                MIT
@@ -37,6 +37,7 @@
                       , resourcet
                       , text
                       , time
+                      , timerep
 
 Test-Suite spec
   Type:                 exitcode-stdio-1.0
@@ -46,6 +47,7 @@
   Main-Is:              Spec.hs
   Build-Depends:        base
                       , hspec
+                      , hspec-expectations-lifted
                       , google-drive
                       , google-oauth2
                       , bytestring
diff --git a/src/Network/Google/Drive/File.hs b/src/Network/Google/Drive/File.hs
--- a/src/Network/Google/Drive/File.hs
+++ b/src/Network/Google/Drive/File.hs
@@ -34,6 +34,7 @@
     , isFolder
     , isDownloadable
     , localPath
+    , folderMimeType
     ) where
 
 import Network.Google.Api
diff --git a/src/Network/Google/Drive/Search.hs b/src/Network/Google/Drive/Search.hs
--- a/src/Network/Google/Drive/Search.hs
+++ b/src/Network/Google/Drive/Search.hs
@@ -37,6 +37,8 @@
 import Data.Monoid ((<>))
 import Data.Text (Text)
 import Data.Text.Encoding (encodeUtf8)
+import Data.Time (UTCTime, utc, utcToZonedTime)
+import Data.Time.RFC3339 (showRFC3339)
 
 import qualified Data.Text as T
 
@@ -70,9 +72,8 @@
     escapeValue True = "true"
     escapeValue False = "false"
 
--- TODO
--- instance QueryValue UTCTime where
--- RFC 3339 format, default timezone is UTC, e.g., 2012-06-04T12:00:00-08:00.
+instance QueryValue UTCTime where
+    escapeValue = T.pack . showRFC3339 . utcToZonedTime utc
 
 newtype Items = Items [File]