1 files changed, 1 insertions, 0 deletions

diff --git a/tprint/src/Options/Utils.hs b/tprint/src/Options/Utils.hs
index 237aa56..3fae250 100644
--- a/tprint/src/Options/Utils.hs
+++ b/tprint/src/Options/Utils.hs
@@ -13,6 +13,7 @@ import Options.Applicative
 import Data.Text (Text)
 import qualified Data.Text as T (pack)
 
+import Data.Monoid
 import Data.Char
 import Data.Maybe
 import Data.List