diff --git a/Yesod/Core/Dispatch.hs b/Yesod/Core/Dispatch.hs
--- a/Yesod/Core/Dispatch.hs
+++ b/Yesod/Core/Dispatch.hs
@@ -27,6 +27,7 @@
     , warpDebug
     , warpEnv
     , mkDefaultMiddlewares
+    , defaultMiddlewaresNoLogging
       -- * WAI subsites
     , WaiSubsite (..)
     ) where
@@ -194,11 +195,13 @@
 #endif
         , outputFormat = Apache FromSocket
         }
-    return $ logWare
-           . acceptOverride
-           . autohead
-           . gzip def
-           . methodOverride
+    return $ logWare . defaultMiddlewaresNoLogging
+
+-- | All of the default middlewares, excluding logging.
+--
+-- Since 1.2.12
+defaultMiddlewaresNoLogging :: W.Middleware
+defaultMiddlewaresNoLogging = acceptOverride . autohead . gzip def . methodOverride
 
 -- | Deprecated synonym for 'warp'.
 warpDebug :: YesodDispatch site => Int -> site -> IO ()
diff --git a/Yesod/Core/Types.hs b/Yesod/Core/Types.hs
--- a/Yesod/Core/Types.hs
+++ b/Yesod/Core/Types.hs
@@ -16,6 +16,7 @@
 import           Control.Exception                  (Exception)
 import           Control.Monad                      (liftM, ap)
 import           Control.Monad.Base                 (MonadBase (liftBase))
+import           Control.Monad.Catch                (MonadCatch (..))
 import           Control.Monad.IO.Class             (MonadIO (liftIO))
 import           Control.Monad.Logger               (LogLevel, LogSource,
                                                      MonadLogger (..))
@@ -62,6 +63,7 @@
 import           Control.Monad.Trans.Class          (MonadTrans (..))
 import           Yesod.Routes.Class                 (RenderRoute (..), ParseRoute (..))
 import           Control.Monad.Reader               (MonadReader (..))
+import Prelude hiding (catch)
 
 -- Sessions
 type SessionMap = Map Text ByteString
@@ -405,6 +407,14 @@
 instance MonadThrow m => MonadThrow (WidgetT site m) where
 #if MIN_VERSION_resourcet(1,1,0)
     throwM = lift . throwM
+
+instance MonadCatch m => MonadCatch (HandlerT site m) where
+  catch (HandlerT m) c = HandlerT $ \r -> m r `catch` \e -> unHandlerT (c e) r
+  mask a = HandlerT $ \e -> mask $ \u -> unHandlerT (a $ q u) e
+    where q u (HandlerT b) = HandlerT (u . b)
+  uninterruptibleMask a =
+    HandlerT $ \e -> uninterruptibleMask $ \u -> unHandlerT (a $ q u) e
+      where q u (HandlerT b) = HandlerT (u . b)
 #else
     monadThrow = lift . monadThrow
 #endif
diff --git a/yesod-core.cabal b/yesod-core.cabal
--- a/yesod-core.cabal
+++ b/yesod-core.cabal
@@ -1,5 +1,5 @@
 name:            yesod-core
-version:         1.2.11.1
+version:         1.2.12
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -68,6 +68,7 @@
                    , warp                  >= 1.3.8
                    , unix-compat
                    , conduit-extra
+                   , exceptions
 
     exposed-modules: Yesod.Core
                      Yesod.Core.Content