diff --git a/Database/MongoDB/Internal/Network.hs b/Database/MongoDB/Internal/Network.hs
index 802b1a7..7f9084e 100644
--- a/Database/MongoDB/Internal/Network.hs
+++ b/Database/MongoDB/Internal/Network.hs
@@ -79,9 +79,9 @@ lookupSeedList :: N.HostName -> IO [Host]
 -- ^ Retrieves the replica set seed list from the SRV DNS record for the given hostname
 lookupSeedList hostname = do 
   rs <- makeResolvSeed defaultResolvConf
-  res <- withResolver rs $ \resolver -> lookupSRV resolver $ "_mongodb._tcp." ++ pack hostname
+  res <- withResolver rs $ \resolver -> lookupSRV resolver $ pack $ "_mongodb._tcp." ++ hostname
   case res of 
     Left _ -> pure []
     Right srv -> pure $ map (\(_, _, por, tar) -> 
       let tar' = dropWhileEnd (=='.') (unpack tar) 
-      in Host tar' (PortNumber . fromIntegral $ por)) srv
\ No newline at end of file
+      in Host tar' (PortNumber . fromIntegral $ por)) srv
diff --git a/mongoDB.cabal b/mongoDB.cabal
index 29e6b39..8a5717e 100644
--- a/mongoDB.cabal
+++ b/mongoDB.cabal
@@ -129,7 +129,11 @@ Benchmark bench
                     , lifted-base >= 0.1.0.3
                     , transformers-base >= 0.4.1
                     , hashtables >= 1.1.2.0
+                    , fail
+                    , dns
+                    , http-types
                     , criterion
+                    , tls >= 1.3.0
 
   if flag(_old-network)
      -- "Network.BSD" is only available in network < 2.9