diff --git a/src/Yam/Import.hs b/src/Yam/Import.hs
--- a/src/Yam/Import.hs
+++ b/src/Yam/Import.hs
@@ -8,6 +8,7 @@
   , liftIO
   , when
   , unless
+  , forM_
   , void
   , (<>)
   , myThreadId
@@ -33,7 +34,7 @@
   ) where
 
 import           Control.Concurrent
-import           Control.Monad              (unless, void, when)
+import           Control.Monad
 import           Control.Monad.Catch
 import           Control.Monad.IO.Class     (MonadIO, liftIO)
 import           Control.Monad.Trans.Class
diff --git a/yam-app.cabal b/yam-app.cabal
--- a/yam-app.cabal
+++ b/yam-app.cabal
@@ -1,5 +1,5 @@
 name:                yam-app
-version:             0.1.3
+version:             0.1.4
 synopsis:            Yam App
 description:         Base Module for Yam
 homepage:            https://github.com/leptonyu/yam/yam-app#readme