diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
new file mode 100644
--- /dev/null
+++ b/CHANGELOG.markdown
@@ -0,0 +1,7 @@
+2.1.3.1
+-------
+* Avoid importing `Control.Monad.Instances` on GHC 7.8 to build without deprecation warnings.
+
+2.1.3
+-----
+* Removed the now-irrelevant `Error` constraint from the `MonadError` instance for `Either e`.
diff --git a/Control/Monad/Error.hs b/Control/Monad/Error.hs
--- a/Control/Monad/Error.hs
+++ b/Control/Monad/Error.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {- |
 Module      :  Control.Monad.Error
 Copyright   :  (c) Michael Weber <michael.weber@post.rwth-aachen.de> 2001,
@@ -54,7 +55,10 @@
 
 import Control.Monad
 import Control.Monad.Fix
+
+#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ < 707
 import Control.Monad.Instances ()
+#endif
 
 {- $customErrorExample
 Here is an example that demonstrates the use of a custom 'Error' data type with
diff --git a/Control/Monad/Error/Class.hs b/Control/Monad/Error/Class.hs
--- a/Control/Monad/Error/Class.hs
+++ b/Control/Monad/Error/Class.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE UndecidableInstances #-}
 
 {- |
@@ -55,7 +56,11 @@
 import Control.Monad.Trans.Class (lift)
 import Control.Exception (IOException, catch, ioError)
 import Control.Monad
+
+#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ < 707
 import Control.Monad.Instances ()
+#endif
+
 import Data.Monoid
 import Prelude (Either(..), (.), IO)
 
@@ -97,7 +102,7 @@
 -- ---------------------------------------------------------------------------
 -- Our parameterizable error monad
 
-instance Error e => MonadError e (Either e) where
+instance MonadError e (Either e) where
     throwError             = Left
     Left  l `catchError` h = h l
     Right r `catchError` _ = Right r
diff --git a/mtl.cabal b/mtl.cabal
--- a/mtl.cabal
+++ b/mtl.cabal
@@ -1,5 +1,5 @@
 name:         mtl
-version:      2.1.2
+version:      2.1.3.1
 cabal-version: >= 1.6
 license:      BSD3
 license-file: LICENSE
@@ -16,6 +16,7 @@
     by Mark P Jones, in /Advanced School of Functional Programming/, 1995
     (<http://web.cecs.pdx.edu/~mpj/pubs/springschool.html>).
 build-type: Simple
+extra-source-files: CHANGELOG.markdown
 
 source-repository head
   type: git