diff --git a/bower.json b/bower.json
index da0b673..fe2ec32 100644
--- a/bower.json
+++ b/bower.json
@@ -25,6 +25,6 @@
     "purescript-lists": "^0.7.0",
     "purescript-random": "^0.2.0",
     "purescript-strings": "^0.7.0",
-    "purescript-transformers": "^0.6.1"
+    "purescript-transformers": "^0.7.1"
   }
 }
diff --git a/src/Test/QuickCheck/Gen.purs b/src/Test/QuickCheck/Gen.purs
index df24c7f..04fef6a 100644
--- a/src/Test/QuickCheck/Gen.purs
+++ b/src/Test/QuickCheck/Gen.purs
@@ -31,7 +31,7 @@ import Prelude
 
 import Control.Monad.Eff (Eff())
 import Control.Monad.Eff.Random (RANDOM())
-import Control.Monad.State (State(..), runState, evalState)
+import Control.Monad.State (State(), runState, evalState)
 import Control.Monad.State.Class (state, modify)
 import Control.Monad.Rec.Class (MonadRec, tailRecM)
 import Data.Array ((!!), length, range)