diff --git a/log.cabal b/log.cabal
--- a/log.cabal
+++ b/log.cabal
@@ -1,5 +1,5 @@
 name:                log
-version:             0.5.0
+version:             0.5.1
 synopsis:            Structured logging solution with multiple backends
 
 description:         A library that provides a way to record structured log messages with multiple backends.
diff --git a/src/Log/Backend/ElasticSearch.hs b/src/Log/Backend/ElasticSearch.hs
--- a/src/Log/Backend/ElasticSearch.hs
+++ b/src/Log/Backend/ElasticSearch.hs
@@ -3,10 +3,12 @@
   , elasticSearchLogger
   ) where
 
+import Control.Applicative
 import Control.Arrow (second)
 import Control.Concurrent
 import Control.Conditional (unlessM)
 import Control.Exception
+import Control.Monad
 import Control.Monad.IO.Class
 import Data.Aeson
 import Data.Aeson.Encode.Pretty
@@ -14,7 +16,6 @@
 import Data.IORef
 import Data.Monoid
 import Data.Monoid.Utils
-import Control.Monad
 import Data.Time
 import Data.Time.Clock.POSIX
 import Data.Word