diff --git a/initializer/Main.hs b/initializer/Main.hs
--- a/initializer/Main.hs
+++ b/initializer/Main.hs
@@ -5,6 +5,7 @@
 import           Control.Monad
 import           Data.Containers
 import           Data.Foldable         (for_)
+import           Data.Monoid           ((<>))
 import           Data.Sequences
 import qualified Data.Text.IO          as T
 import           Options.Applicative
diff --git a/marvin.cabal b/marvin.cabal
--- a/marvin.cabal
+++ b/marvin.cabal
@@ -1,5 +1,5 @@
 name: marvin
-version: 0.1.2
+version: 0.1.3
 cabal-version: >=1.10
 build-type: Simple
 license: BSD3