diff --git a/paypal-adaptive-hoops.cabal b/paypal-adaptive-hoops.cabal
--- a/paypal-adaptive-hoops.cabal
+++ b/paypal-adaptive-hoops.cabal
@@ -1,5 +1,5 @@
 name:                 paypal-adaptive-hoops
-version:              0.10.0.0
+version:              0.10.0.1
 author:               Ian Grant Jeffries
 maintainer:           ian@housejeffries.com
 category:             Web
@@ -25,12 +25,12 @@
                     , TemplateHaskell
 
   build-depends:      aeson        >= 0.8   && < 0.9
-                    , base         >= 4.6   && < 5.0
+                    , base         >= 4.6   && < 4.9
                     , bytestring   >= 0.10  && < 0.11
                     , data-default >= 0.5   && < 0.6
                     , errors       >= 1.4   && < 1.5
                     , http-client  >= 0.4.2 && < 0.5
-                    , lens         >= 4.6   && < 4.8
+                    , lens         >= 4.6   && < 4.9
                     , lens-aeson   >= 1.0   && < 1.1
                     , text         >= 1.1   && < 1.3
                     , time         >= 1.4   && < 1.6
diff --git a/src/Web/PayPal/Adaptive/Core.hs b/src/Web/PayPal/Adaptive/Core.hs
--- a/src/Web/PayPal/Adaptive/Core.hs
+++ b/src/Web/PayPal/Adaptive/Core.hs
@@ -239,8 +239,8 @@
   def = Withdrawal
     { _wdAmount        = mempty
     , _wdReceiverEmail = mempty
-    , _wdReturnUrl    = "https://example.com/"
-    , _wdCancelUrl    = "https://example.com/cancel"
+    , _wdReturnUrl     = "https://example.com/"
+    , _wdCancelUrl     = "https://example.com/cancel"
     }
 
 -- | Exported by Web.PayPal.Adaptive.Internal