diff --git a/xmonad-masser.cabal b/xmonad-masser.cabal
index 4fffaa2..ceda6f8 100644
--- a/xmonad-masser.cabal
+++ b/xmonad-masser.cabal
@@ -34,5 +34,7 @@ library
                      , unix
                      , containers
                      , text
+                     , lens
+                     , generic-lens
   hs-source-dirs:      src
   default-language:    Haskell2010