diff --git a/snap.cabal b/snap.cabal
--- a/snap.cabal
+++ b/snap.cabal
@@ -1,5 +1,5 @@
 name:           snap
-version:        1.1.2.0
+version:        1.1.3.0
 synopsis:       Top-level package for the Snap Web Framework
 description:
     This is the top-level package for the official Snap Framework libraries.
@@ -39,10 +39,11 @@
   GHC == 7.6.3,
   GHC == 7.8.4,
   GHC == 7.10.3,
-  GHC == 8.0.1,
-  GHC == 8.2.1,
-  GHC == 8.4.1,
-  GHC == 8.6.1
+  GHC == 8.0.2,
+  GHC == 8.2.2,
+  GHC == 8.4.4,
+  GHC == 8.6.3,
+  GHC == 8.8.1
 
 extra-source-files:
   .ghci
@@ -113,7 +114,7 @@
   build-depends:
     aeson                     >= 0.6      && < 1.5,
     attoparsec                >= 0.10     && < 0.14,
-    base                      >= 4        && < 4.13,
+    base                      >= 4        && < 4.14,
     bytestring                >= 0.9.1    && < 0.11,
     cereal                    >= 0.3      && < 0.6,
     clientsession             >= 0.8      && < 0.10,
@@ -127,9 +128,9 @@
     -- hashable is broken from 1.2.0.0 through 1.2.0.5
     -- snap does work with hashable 1.1.*, but some have complained that
     -- the version disjunction causes problems with dependency resolution.
-    hashable                  >= 1.2.0.6  && < 1.3,
+    hashable                  >= 1.2.0.6  && < 1.4,
     heist                     >= 1.1      && < 1.2,
-    lens                      >= 3.7.6    && < 4.18,
+    lens                      >= 3.7.6    && < 4.19,
     lifted-base               >= 0.2      && < 0.3,
     map-syntax                >= 0.2      && < 0.4,
     monad-control             >= 0.3      && < 1.1,
@@ -257,7 +258,7 @@
     mtl,
     mwc-random,
     pwstore-fast,
-    QuickCheck                 >= 2.4.2    && < 2.13,
+    QuickCheck                 >= 2.4.2    && < 2.14,
     smallcheck                 >= 1.1.1    && < 1.2,
     snap-core,
     snap-server,
diff --git a/src/Snap/Snaplet/Internal/RST.hs b/src/Snap/Snaplet/Internal/RST.hs
--- a/src/Snap/Snaplet/Internal/RST.hs
+++ b/src/Snap/Snaplet/Internal/RST.hs
@@ -8,9 +8,9 @@
 
 import           Control.Applicative         (Alternative (..),
                                               Applicative (..))
-import           Control.Category            ((.))
-import           Control.Monad               (MonadPlus (..), ap)
+import           Control.Monad
 import           Control.Monad.Base          (MonadBase (..))
+import qualified Control.Monad.Fail as Fail
 import           Control.Monad.Reader        (MonadReader (..))
 import           Control.Monad.State.Class   (MonadState (..))
 import           Control.Monad.Trans         (MonadIO (..), MonadTrans (..))
@@ -18,8 +18,6 @@
                                               MonadTransControl (..),
                                               defaultLiftBaseWith,
                                               defaultRestoreM)
-import           Prelude                     (Functor (..), Monad (..), seq,
-                                              ($))
 import           Snap.Core                   (MonadSnap (..))
 
 
@@ -93,8 +91,12 @@
 instance (Monad m) => Monad (RST r s m) where
     return a = RST $ \_ s -> return (a, s)
     (>>=)    = rwsBind
+#if !MIN_VERSION_base(4,13,0)
     fail msg = RST $ \_ _ -> fail msg
+#endif
 
+instance Fail.MonadFail m => Fail.MonadFail (RST r s m) where
+    fail msg = RST $ \_ _ -> Fail.fail msg
 
 instance (MonadPlus m) => MonadPlus (RST r s m) where
     mzero       = RST $ \_ _ -> mzero
diff --git a/src/Snap/Snaplet/Test.hs b/src/Snap/Snaplet/Test.hs
--- a/src/Snap/Snaplet/Test.hs
+++ b/src/Snap/Snaplet/Test.hs
@@ -38,7 +38,7 @@
 
 
 ------------------------------------------------------------------------------
--- | Remove the given file before running an IO computation. Obviously it
+-- | Remove the given file after running an IO computation. Obviously it
 -- can be used with 'Assertion'.
 withTemporaryFile :: FilePath -> IO () -> IO ()
 withTemporaryFile f = finally (removeFileMayNotExist f)