diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,10 @@
 # ChangeLog for monad-logger
 
+## 0.3.40
+
+* Relax `fast-logger` upper bound from 3.2 to 3.3
+* Add `Alternative` instances for `LoggingT` and `NoLoggingT`
+
 ## 0.3.39
 
 * Make the previous change backwards compatible with CPP
diff --git a/Control/Monad/Logger.hs b/Control/Monad/Logger.hs
--- a/Control/Monad/Logger.hs
+++ b/Control/Monad/Logger.hs
@@ -113,7 +113,7 @@
 import Data.Functor ((<$>))
 import Data.Monoid (Monoid)
 
-import Control.Applicative (Applicative (..), WrappedMonad(..))
+import Control.Applicative (Alternative (..), Applicative (..), WrappedMonad(..))
 import Control.Concurrent.Chan (Chan(),writeChan,readChan)
 import Control.Concurrent.STM
 import Control.Concurrent.STM.TBChan
@@ -389,7 +389,10 @@
 --
 -- @since 0.2.4
 newtype NoLoggingT m a = NoLoggingT { runNoLoggingT :: m a }
-  deriving (Functor, Applicative, Monad, MonadIO, MonadThrow, MonadCatch, MonadMask, MonadActive, MonadBase b)
+  deriving (
+    Functor, Applicative, Monad, MonadIO, MonadThrow, MonadCatch, MonadMask, MonadActive, MonadBase b
+    , Alternative -- ^ @since 0.3.40
+    )
 
 -- For some reason GND is a fool on GHC 7.10 and older, we have to help it by providing the context explicitly.
 deriving instance MonadResource m => MonadResource (NoLoggingT m)
@@ -597,6 +600,11 @@
                                        <*> (runLoggingT loggerA) loggerFn
     {-# INLINE (<*>) #-}
 #endif
+
+-- | @since 0.3.40
+instance (Alternative m) => Alternative (LoggingT m) where
+  empty = LoggingT (const empty)
+  LoggingT x <|> LoggingT y = LoggingT (\f -> x f <|> y f)
 
 #if MIN_VERSION_base(4, 9, 0)
 -- | @since 0.3.30
diff --git a/monad-logger.cabal b/monad-logger.cabal
--- a/monad-logger.cabal
+++ b/monad-logger.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           monad-logger
-version:        0.3.39
+version:        0.3.40
 synopsis:       A class of monads which can log messages.
 description:    See README and Haddocks at <https://www.stackage.org/package/monad-logger>
 category:       System
@@ -40,7 +40,7 @@
     , conduit >=1.0 && <1.4
     , conduit-extra >=1.1 && <1.4
     , exceptions >=0.6 && <0.11
-    , fast-logger >=2.1 && <3.2
+    , fast-logger >=2.1 && <3.3
     , lifted-base
     , monad-control >=1.0
     , monad-loops