diff --git a/src/coin-selection/lib/Convex/CoinSelection.hs b/src/coin-selection/lib/Convex/CoinSelection.hs
index 406cdfd..a27290c 100644
--- a/src/coin-selection/lib/Convex/CoinSelection.hs
+++ b/src/coin-selection/lib/Convex/CoinSelection.hs
@@ -142,7 +142,7 @@ import Convex.Utxos (
 import Convex.Utxos qualified as Utxos
 import Convex.Wallet (Wallet)
 import Convex.Wallet qualified as Wallet
-import Data.Aeson (FromJSON (..), Options (sumEncoding), SumEncoding (..), ToJSON (..), withObject, (.:))
+import Data.Aeson (FromJSON (..), Options (sumEncoding), SumEncoding (..), ToJSON (..))
 import Data.Aeson.TH (defaultOptions, deriveFromJSON)
 import Data.Bifunctor (Bifunctor (..))
 import Data.Default (Default (..))