diff --git a/src/Web/Stripe/Client/Internal.hs b/src/Web/Stripe/Client/Internal.hs
--- a/src/Web/Stripe/Client/Internal.hs
+++ b/src/Web/Stripe/Client/Internal.hs
@@ -1,11 +1,14 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE RecordWildCards   #-}
--- |
+------------------------------------------------------------------------------
+-- | 
 -- Module      : Web.Stripe.Client.Internal
 -- Copyright   : (c) David Johnson, 2014
 -- Maintainer  : djohnson.m@gmail.com
 -- Stability   : experimental
 -- Portability : POSIX
+-- | 
+------------------------------------------------------------------------------
 module Web.Stripe.Client.Internal
     ( callAPI
     , stripe
@@ -41,7 +44,7 @@
 import           Web.Stripe.Client.Types    (APIVersion (..), Stripe,
                                              StripeConfig (..),
                                              StripeRequest (..))
-import           Web.Stripe.Client.Util     (fromSeconds, getParams,
+import           Web.Stripe.Client.Util     (fromSeconds, getParams, toSeconds,
                                              paramsToByteString, toBytestring,
                                              toExpandable, toMetaData, toText,
                                              toTextLower, (</>))
diff --git a/src/Web/Stripe/Customer.hs b/src/Web/Stripe/Customer.hs
--- a/src/Web/Stripe/Customer.hs
+++ b/src/Web/Stripe/Customer.hs
@@ -56,15 +56,15 @@
     , PlanId             (..)
     , Quantity           (..)
     , StripeDeleteResult (..)
+    , TrialPeriod        (..)
     , Description
     , AccountBalance
-    , TrialPeriod
     , Limit
     ) where
 
 import           Web.Stripe.Client.Internal (Method (GET, POST, DELETE), Stripe,
                                              StripeRequest (..), callAPI, toMetaData,
-                                             getParams, toText, (</>), toExpandable)
+                                             toSeconds, getParams, toText, (</>), toExpandable)
 import           Web.Stripe.Types           (AccountBalance, CVC (..),
                                              CardId (..), CardNumber (..),
                                              CouponId (..), Customer (..),
@@ -75,7 +75,7 @@
                                              StartingAfter,
                                              StripeDeleteResult (..),
                                              StripeList (..), TokenId (..),
-                                             TrialPeriod, ExpandParams)
+                                             TrialPeriod(..), ExpandParams)
 import           Web.Stripe.Types.Util
 
 ------------------------------------------------------------------------------
@@ -122,7 +122,7 @@
                    , ("email", (\(Email x) -> x) `fmap` email)
                    , ("plan", (\(PlanId x) -> x) `fmap` planId)
                    , ("quantity",  (\(Quantity x) -> toText x) `fmap` quantity)
-                   , ("trial_end", toText `fmap` trialEnd)
+                   , ("trial_end", (\(TrialPeriod x) -> toText $ toSeconds x) `fmap` trialEnd)
                 ]
 
 ------------------------------------------------------------------------------
diff --git a/src/Web/Stripe/Plan.hs b/src/Web/Stripe/Plan.hs
--- a/src/Web/Stripe/Plan.hs
+++ b/src/Web/Stripe/Plan.hs
@@ -48,6 +48,7 @@
     , TrialPeriodDays    (..)
     , StripeDeleteResult (..)
     , Currency           (..)
+    , Email              (..)
     , Limit
     , StartingAfter
     , EndingBefore
@@ -62,7 +63,7 @@
                                              StripeRequest(..), toTextLower, (</>))
 
 import           Web.Stripe.Types (PlanId (..) , Plan (..), Interval (..), StripeList(..),
-                                   IntervalCount (..), TrialPeriodDays (..), Limit,
+                                   IntervalCount (..), TrialPeriodDays (..), Limit, Email (..),
                                    StartingAfter, EndingBefore, StripeDeleteResult(..),
                                    Currency (..), Name, Amount, Description, MetaData)
 
diff --git a/src/Web/Stripe/Types.hs b/src/Web/Stripe/Types.hs
--- a/src/Web/Stripe/Types.hs
+++ b/src/Web/Stripe/Types.hs
@@ -499,7 +499,7 @@
 
 ------------------------------------------------------------------------------
 -- | `TrialPeriod` for a Plan
-type TrialPeriod = UTCTime
+newtype TrialPeriod = TrialPeriod UTCTime deriving (Show, Eq)
 
 ------------------------------------------------------------------------------
 -- | Interval for `Plan`s
diff --git a/stripe-haskell.cabal b/stripe-haskell.cabal
--- a/stripe-haskell.cabal
+++ b/stripe-haskell.cabal
@@ -1,5 +1,5 @@
 name:                stripe-haskell
-version:             0.1.0.6
+version:             0.1.1.0
 synopsis:            Stripe API for Haskell
 license:             MIT
 license-file:        LICENSE
@@ -131,7 +131,6 @@
                      , http-streams
                      , io-streams
                      , mtl >= 2.1.3.1
-                     , random
                      , text
                      , time
                      , transformers