diff --git a/hydra-cardano-api/src/Hydra/Cardano/Api/AlonzoEraOnwards.hs b/hydra-cardano-api/src/Hydra/Cardano/Api/AlonzoEraOnwards.hs
index 20d3eb661b7..1086049fbad 100644
--- a/hydra-cardano-api/src/Hydra/Cardano/Api/AlonzoEraOnwards.hs
+++ b/hydra-cardano-api/src/Hydra/Cardano/Api/AlonzoEraOnwards.hs
@@ -12,3 +12,6 @@ instance IsAlonzoEraOnwards AlonzoEra where
 
 instance IsAlonzoEraOnwards BabbageEra where
   alonzoEraOnwards = AlonzoEraOnwardsBabbage
+
+instance IsAlonzoEraOnwards ConwayEra where
+  alonzoEraOnwards = AlonzoEraOnwardsConway
diff --git a/hydra-cardano-api/src/Hydra/Cardano/Api/BabbageEraOnwards.hs b/hydra-cardano-api/src/Hydra/Cardano/Api/BabbageEraOnwards.hs
index 10d82cc3445..c23d083d64b 100644
--- a/hydra-cardano-api/src/Hydra/Cardano/Api/BabbageEraOnwards.hs
+++ b/hydra-cardano-api/src/Hydra/Cardano/Api/BabbageEraOnwards.hs
@@ -9,3 +9,6 @@ class IsBabbageEraOnwards era where
 
 instance IsBabbageEraOnwards BabbageEra where
   babbageEraOnwards = BabbageEraOnwardsBabbage
+
+instance IsBabbageEraOnwards ConwayEra where
+  babbageEraOnwards = BabbageEraOnwardsConway
diff --git a/hydra-cardano-api/src/Hydra/Cardano/Api/MaryEraOnwards.hs b/hydra-cardano-api/src/Hydra/Cardano/Api/MaryEraOnwards.hs
index 55b5f27768b..c4efc03591a 100644
--- a/hydra-cardano-api/src/Hydra/Cardano/Api/MaryEraOnwards.hs
+++ b/hydra-cardano-api/src/Hydra/Cardano/Api/MaryEraOnwards.hs
@@ -15,3 +15,6 @@ instance IsMaryEraOnwards AlonzoEra where
 
 instance IsMaryEraOnwards BabbageEra where
   maryEraOnwards = MaryEraOnwardsBabbage
+
+instance IsMaryEraOnwards ConwayEra where
+  maryEraOnwards = MaryEraOnwardsConway
diff --git a/hydra-cardano-api/src/Hydra/Cardano/Api/MultiAssetSupportedInEra.hs b/hydra-cardano-api/src/Hydra/Cardano/Api/MultiAssetSupportedInEra.hs
deleted file mode 100644
index bdabfddad05..00000000000
--- a/hydra-cardano-api/src/Hydra/Cardano/Api/MultiAssetSupportedInEra.hs
+++ /dev/null
@@ -1 +0,0 @@
-module Hydra.Cardano.Api.MultiAssetSupportedInEra where