diff --git a/benchmarks/Main.hs b/benchmarks/Main.hs
index e3719f4..fe53edd 100644
--- a/benchmarks/Main.hs
+++ b/benchmarks/Main.hs
@@ -2,14 +2,13 @@ module Main where
 
 import Criterion
 import Criterion.Main
-import qualified Data.Vector as F
 import qualified Hasql.Connection as A
 import qualified Hasql.Decoders as D
-import qualified Hasql.Encoders as E
 import qualified Hasql.Session as B
 import qualified Hasql.Statement as C
 import Prelude
 
+main :: IO ()
 main =
   do
     Right connection <- acquireConnection