diff --git a/app/Main.hs b/app/Main.hs
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -4,6 +4,7 @@
     ) where
 
 import Control.Monad
+import Data.Monoid ((<>))
 import Options.Applicative
 import System.Environment
 import Text.Show.Pretty
diff --git a/avwx.cabal b/avwx.cabal
--- a/avwx.cabal
+++ b/avwx.cabal
@@ -1,5 +1,5 @@
 name:                avwx
-version:             0.3.0.0
+version:             0.3.0.1
 synopsis:            Parse aviation weather reports
 description:         Parse aviation weather reports, currently METARs and TAFs
 homepage:            https://www.hcesperer.org/posts/2016-09-20-avwx.html