diff --git a/snaplet-postgresql-simple.cabal b/snaplet-postgresql-simple.cabal
--- a/snaplet-postgresql-simple.cabal
+++ b/snaplet-postgresql-simple.cabal
@@ -1,5 +1,5 @@
 name:           snaplet-postgresql-simple
-version:        0.6.0.3
+version:        0.6.0.4
 synopsis:       postgresql-simple snaplet for the Snap Framework
 description:    This snaplet contains support for using the Postgresql
                 database with a Snap Framework application via the
@@ -43,7 +43,6 @@
     bytestring                 >= 0.9.1   && < 0.11,
     clientsession              >= 0.7.2   && < 0.10,
     configurator               >= 0.2     && < 0.4,
-    errors                     >= 1.4     && < 1.5,
     lens                                     < 4.13,
     MonadCatchIO-transformers  >= 0.3     && < 0.4,
     mtl                        >= 2       && < 2.3,
diff --git a/src/Snap/Snaplet/Auth/Backends/PostgresqlSimple.hs b/src/Snap/Snaplet/Auth/Backends/PostgresqlSimple.hs
--- a/src/Snap/Snaplet/Auth/Backends/PostgresqlSimple.hs
+++ b/src/Snap/Snaplet/Auth/Backends/PostgresqlSimple.hs
@@ -37,13 +37,13 @@
 ------------------------------------------------------------------------------
 import           Prelude
 import           Control.Applicative
-import           Control.Error
 import qualified Control.Exception as E
 import           Control.Lens
 import           Control.Monad
 import           Control.Monad.Trans
 import qualified Data.Configurator as C
 import qualified Data.HashMap.Lazy as HM
+import           Data.Maybe
 import qualified Data.Text as T
 import           Data.Text (Text)
 import qualified Data.Text.Encoding as T