diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,8 @@
+## 3.0.1
+
+* Creating the `Internal` module.
+  [#185](https://github.com/kazu-yamamoto/logger/pull/185)
+
 ## 3.0.0
 
 * Allowing the callback logger to be generic. [#182](https://github.com/kazu-yamamoto/logger/pull/180) This is a BREAKING CHANGE. Users should do:
@@ -15,7 +20,7 @@
 ## 2.4.15
 
 * Rescuing GHC 7.8.
-	
+
 ## 2.4.14
 
 * Add `ToLogStr` instances for the following types: signed integers, unsigned integers, floating-point numbers. These instances all use decimal encodings. [#177](https://github.com/kazu-yamamoto/logger/pull/177)
diff --git a/System/Log/FastLogger/IO.hs b/System/Log/FastLogger/IO.hs
--- a/System/Log/FastLogger/IO.hs
+++ b/System/Log/FastLogger/IO.hs
@@ -1,5 +1,11 @@
 {-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE CPP #-}
+
+#if __GLASGOW_HASKELL__ <= 708
 {-# LANGUAGE Trustworthy #-}
+#else
+{-# LANGUAGE Safe #-}
+#endif
 
 module System.Log.FastLogger.IO where
 
diff --git a/System/Log/FastLogger/Internal.hs b/System/Log/FastLogger/Internal.hs
new file mode 100644
--- /dev/null
+++ b/System/Log/FastLogger/Internal.hs
@@ -0,0 +1,14 @@
+
+-- |
+-- The contents of this module can change at any time without warning.
+module System.Log.FastLogger.Internal
+  ( module System.Log.FastLogger.IO
+  , module System.Log.FastLogger.FileIO
+  , module System.Log.FastLogger.LogStr
+  , module System.Log.FastLogger.Logger
+  ) where
+
+import System.Log.FastLogger.IO
+import System.Log.FastLogger.FileIO
+import System.Log.FastLogger.LogStr
+import System.Log.FastLogger.Logger
diff --git a/fast-logger.cabal b/fast-logger.cabal
--- a/fast-logger.cabal
+++ b/fast-logger.cabal
@@ -1,5 +1,5 @@
 Name:                   fast-logger
-Version:                3.0.0
+Version:                3.0.1
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3
@@ -20,6 +20,7 @@
                         System.Log.FastLogger.File
                         System.Log.FastLogger.Date
                         System.Log.FastLogger.Types
+                        System.Log.FastLogger.Internal
   Other-Modules:        System.Log.FastLogger.Imports
                         System.Log.FastLogger.IO
                         System.Log.FastLogger.FileIO