diff --git a/colorful-monoids.cabal b/colorful-monoids.cabal
--- a/colorful-monoids.cabal
+++ b/colorful-monoids.cabal
@@ -1,21 +1,23 @@
--- This file has been generated from package.yaml by hpack version 0.15.0.
+-- This file has been generated from package.yaml by hpack version 0.28.2.
 --
 -- see: https://github.com/sol/hpack
+--
+-- hash: e15e55fee2ffbcab50bb30e2a6fa142c105abb9f985135497f3b3a5100981732
 
 name:           colorful-monoids
-version:        0.2.1.0
+version:        0.2.1.1
 synopsis:       Styled console text output using ANSI escape sequences.
-description:    Styled console text output using ANSI escape sequences.
+description:    This library provides styled text output using ANSI escape sequences. The colored text is modeled as nested Colored values, which form a Monoid. As a result the colored code has a relatively concise form.
 category:       Text, User Interfaces, Monad
 stability:      experimental
 homepage:       https://github.com/minad/colorful-monoids#readme
 bug-reports:    https://github.com/minad/colorful-monoids/issues
 author:         Daniel Mendler <mail@daniel-mendler.de>
 maintainer:     Daniel Mendler <mail@daniel-mendler.de>
-copyright:      2017 Daniel Mendler
+copyright:      2017-2018 Daniel Mendler
 license:        MIT
 license-file:   LICENSE
-tested-with:    GHC == 7.10.3, GHC == 8.0.1
+tested-with:    GHC == 7.10.3, GHC == 8.0.1, GHC == 8.4.2
 build-type:     Simple
 cabal-version:  >= 1.10
 
@@ -24,14 +26,6 @@
   location: https://github.com/minad/colorful-monoids
 
 library
-  hs-source-dirs:
-      src
-  ghc-options: -Wall
-  build-depends:
-      base >= 4.8 && < 5
-  if impl(ghc < 8.0)
-    build-depends:
-        semigroups >= 0.9 && < 1
   exposed-modules:
       Data.Monoid.Colorful
       Data.Monoid.Colorful.Flat
@@ -43,16 +37,26 @@
       Data.Monoid.Colorful.Term
       Data.Monoid.Colorful.Trustworthy
       Paths_colorful_monoids
+  hs-source-dirs:
+      src
+  ghc-options: -Wall
+  build-depends:
+      base >=4.8 && <5
+  if impl(ghc < 8.0)
+    build-depends:
+        semigroups >=0.9 && <1
   default-language: Haskell2010
 
 test-suite example
   type: exitcode-stdio-1.0
   main-is: example.hs
+  other-modules:
+      Paths_colorful_monoids
   ghc-options: -Wall
   build-depends:
-      base >= 4.8 && < 5
+      base >=4.8 && <5
     , colorful-monoids
   if impl(ghc < 8.0)
     build-depends:
-        semigroups >= 0.9 && < 1
+        semigroups >=0.9 && <1
   default-language: Haskell2010
diff --git a/src/Data/Monoid/Colorful/Nested.hs b/src/Data/Monoid/Colorful/Nested.hs
--- a/src/Data/Monoid/Colorful/Nested.hs
+++ b/src/Data/Monoid/Colorful/Nested.hs
@@ -28,7 +28,7 @@
 import Data.Monoid.Colorful.SGR
 import Data.Monoid.Colorful.Trustworthy
 import Data.String (IsString(..))
-import Data.Semigroup (Semigroup)
+import qualified Data.Semigroup as Sem
 import GHC.Generics (Generic, Generic1)
 import qualified Data.Monoid.Colorful.Flat as Flat
 import Control.Monad (ap)
@@ -59,10 +59,12 @@
   Bg      a x >>= f = Bg      a (x >>= f)
   Pair    x y >>= f = Pair      (x >>= f) (y >>= f)
 
-instance Semigroup (Colored a)
+instance Sem.Semigroup (Colored a) where
+  (<>) = Pair
+
 instance Monoid (Colored a) where
   mempty = Nil
-  mappend = Pair
+  mappend = (Sem.<>)
 
 instance IsString a => IsString (Colored a) where
   fromString = Value . fromString