diff --git a/ChangeLog.md b/ChangeLog.md
new file mode 100644
--- /dev/null
+++ b/ChangeLog.md
@@ -0,0 +1,1 @@
+__0.3.8__: Simplify constraint on `MonadLogger (NoLoggingT m)` from `MonadIO m` to `Monad m` [Github issue #48](https://github.com/kazu-yamamoto/logger/issues/48).
diff --git a/Control/Monad/Logger.hs b/Control/Monad/Logger.hs
--- a/Control/Monad/Logger.hs
+++ b/Control/Monad/Logger.hs
@@ -333,7 +333,7 @@
              f $ liftM StMT' . runInBase . (\(NoLoggingT r) -> r)
      restoreM (StMT' base) = NoLoggingT $ restoreM base
 
-instance MonadIO m => MonadLogger (NoLoggingT m) where
+instance Monad m => MonadLogger (NoLoggingT m) where
     monadLoggerLog _ _ _ _ = return ()
 
 -- | Monad transformer that adds a new logging function.
diff --git a/monad-logger.cabal b/monad-logger.cabal
--- a/monad-logger.cabal
+++ b/monad-logger.cabal
@@ -1,5 +1,5 @@
 name:                monad-logger
-version:             0.3.7.2
+version:             0.3.8
 synopsis:            A class of monads which can log messages.
 description:         This package uses template-haskell for determining source code locations of messages.
 homepage:            https://github.com/kazu-yamamoto/logger
@@ -10,7 +10,7 @@
 category:            System
 build-type:          Simple
 cabal-version:       >=1.8
-
+extra-source-files:  ChangeLog.md
 
 flag template_haskell {
       Description: Enable Template Haskell support