diff --git a/hydra-cardano-api/hydra-cardano-api.cabal b/hydra-cardano-api/hydra-cardano-api.cabal
index eb6c57e0cb0..a5b20e8e689 100644
--- a/hydra-cardano-api/hydra-cardano-api.cabal
+++ b/hydra-cardano-api/hydra-cardano-api.cabal
@@ -95,6 +95,7 @@ library
     , cardano-ledger-alonzo   >=1.6    && <1.7
     , cardano-ledger-api      >=1.8    && <1.9
     , cardano-ledger-babbage  >=1.6    && <1.7
+    , cardano-ledger-conway   >=1.12   && <1.13
     , cardano-ledger-binary   >=1.3    && <1.4
     , cardano-ledger-byron    >=1.0.0  && <1.1
     , cardano-ledger-core     >=1.10   && <1.11
diff --git a/hydra-cardano-api/src/Cardano/Api/UTxO.hs b/hydra-cardano-api/src/Cardano/Api/UTxO.hs
index c5c398489bd..edc61f360fa 100644
--- a/hydra-cardano-api/src/Cardano/Api/UTxO.hs
+++ b/hydra-cardano-api/src/Cardano/Api/UTxO.hs
@@ -25,7 +25,7 @@ import Hydra.Cardano.Api.BabbageEraOnwards (IsBabbageEraOnwards (..))
 import Hydra.Cardano.Api.MaryEraOnwards (IsMaryEraOnwards (..))
 import Prelude
 
-type Era = BabbageEra
+type Era = ConwayEra
 
 type UTxO = UTxO' (TxOut CtxUTxO Era)
 
diff --git a/hydra-cardano-api/src/Hydra/Cardano/Api/PlutusScript.hs b/hydra-cardano-api/src/Hydra/Cardano/Api/PlutusScript.hs
index 14a6038a204..757d2155d77 100644
--- a/hydra-cardano-api/src/Hydra/Cardano/Api/PlutusScript.hs
+++ b/hydra-cardano-api/src/Hydra/Cardano/Api/PlutusScript.hs
@@ -5,7 +5,7 @@ module Hydra.Cardano.Api.PlutusScript where
 import Hydra.Cardano.Api.Prelude
 
 import Cardano.Ledger.Alonzo.Scripts qualified as Ledger
-import Cardano.Ledger.Babbage.Scripts qualified as Ledger
+import Cardano.Ledger.Conway.Scripts qualified as Ledger
 import Cardano.Ledger.Plutus.Language qualified as Ledger
 import Data.ByteString.Short qualified as SBS
 import PlutusLedgerApi.Common qualified as Plutus
@@ -37,9 +37,9 @@ toLedgerScript ::
   Ledger.AlonzoScript (ShelleyLedgerEra Era)
 toLedgerScript (PlutusScriptSerialised bytes) =
   Ledger.PlutusScript $ case plutusScriptVersion @lang of
-    PlutusScriptV1 -> Ledger.BabbagePlutusV1 $ Ledger.Plutus (Ledger.PlutusBinary bytes)
-    PlutusScriptV2 -> Ledger.BabbagePlutusV2 $ Ledger.Plutus (Ledger.PlutusBinary bytes)
-    PlutusScriptV3 -> error "toLedgerScript: PlutusV3 not supported in Babbage"
+    PlutusScriptV1 -> Ledger.ConwayPlutusV1 $ Ledger.Plutus (Ledger.PlutusBinary bytes)
+    PlutusScriptV2 -> Ledger.ConwayPlutusV2 $ Ledger.Plutus (Ledger.PlutusBinary bytes)
+    PlutusScriptV3 -> Ledger.ConwayPlutusV3 $ Ledger.Plutus (Ledger.PlutusBinary bytes)
 
 -- | Convert a serialized plutus script into a cardano-api 'PlutusScript'.
 fromPlutusScript :: Plutus.SerialisedScript -> PlutusScript lang
diff --git a/hydra-cardano-api/src/Hydra/Cardano/Api/Prelude.hs b/hydra-cardano-api/src/Hydra/Cardano/Api/Prelude.hs
index 31614e9c362..e3f3c028f68 100644
--- a/hydra-cardano-api/src/Hydra/Cardano/Api/Prelude.hs
+++ b/hydra-cardano-api/src/Hydra/Cardano/Api/Prelude.hs
@@ -53,7 +53,7 @@ import Data.Typeable (Typeable)
 import GHC.Stack (HasCallStack)
 import Test.QuickCheck (Arbitrary (..), Gen)
 
-type Era = BabbageEra
+type Era = ConwayEra
 
 -- | Currently supported ledger era.
 type LedgerEra = ShelleyLedgerEra Era
diff --git a/hydra-cardano-api/src/Hydra/Cardano/Api/TxBody.hs b/hydra-cardano-api/src/Hydra/Cardano/Api/TxBody.hs
index 54c13e21d3c..8cdc6d5c530 100644
--- a/hydra-cardano-api/src/Hydra/Cardano/Api/TxBody.hs
+++ b/hydra-cardano-api/src/Hydra/Cardano/Api/TxBody.hs
@@ -3,7 +3,7 @@ module Hydra.Cardano.Api.TxBody where
 import Hydra.Cardano.Api.Prelude
 
 import Cardano.Ledger.Alonzo.TxWits qualified as Ledger
-import Cardano.Ledger.Api (AlonzoPlutusPurpose (..), AsIndex, AsItem (..), PlutusPurpose)
+import Cardano.Ledger.Api (AsIndex, AsItem (..), PlutusPurpose, ConwayPlutusPurpose (..))
 import Cardano.Ledger.Babbage.Core (redeemerPointer)
 import Cardano.Ledger.BaseTypes (strictMaybeToMaybe)
 import Cardano.Ledger.Core qualified as Ledger
@@ -23,7 +23,7 @@ findRedeemerSpending ::
   TxIn ->
   Maybe a
 findRedeemerSpending (getTxBody -> ShelleyTxBody _ body _ scriptData _ _) txIn = do
-  ptr <- strictMaybeToMaybe $ redeemerPointer body (AlonzoSpending . AsItem $ toLedgerTxIn txIn)
+  ptr <- strictMaybeToMaybe $ redeemerPointer body (ConwaySpending . AsItem $ toLedgerTxIn txIn)
   lookupRedeemer ptr scriptData
 
 findRedeemerMinting ::
@@ -32,7 +32,7 @@ findRedeemerMinting ::
   PolicyId ->
   Maybe a
 findRedeemerMinting (getTxBody -> ShelleyTxBody _ body _ scriptData _ _) pid = do
-  ptr <- strictMaybeToMaybe $ redeemerPointer body (AlonzoMinting . AsItem $ toLedgerPolicyID pid)
+  ptr <- strictMaybeToMaybe $ redeemerPointer body (ConwayMinting . AsItem $ toLedgerPolicyID pid)
   lookupRedeemer ptr scriptData
 
 findScriptMinting ::
diff --git a/hydra-node/hydra-node.cabal b/hydra-node/hydra-node.cabal
index 812fb015e8e..fce70c71661 100644
--- a/hydra-node/hydra-node.cabal
+++ b/hydra-node/hydra-node.cabal
@@ -118,6 +118,7 @@ library
     , cardano-ledger-api
     , cardano-ledger-babbage:{cardano-ledger-babbage, testlib}
     , cardano-ledger-binary
+    , cardano-ledger-conway:{cardano-ledger-conway, testlib}
     , cardano-ledger-core
     , cardano-ledger-shelley
     , cardano-slotting
diff --git a/hydra-node/src/Hydra/Chain/CardanoClient.hs b/hydra-node/src/Hydra/Chain/CardanoClient.hs
index dbaa0c9c92e..e9d90c4e16d 100644
--- a/hydra-node/src/Hydra/Chain/CardanoClient.hs
+++ b/hydra-node/src/Hydra/Chain/CardanoClient.hs
@@ -289,8 +289,8 @@ queryProtocolParameters networkId socket queryPoint =
       AllegraEra -> encodeToEra AllegraEra pparams
       MaryEra -> encodeToEra MaryEra pparams
       AlonzoEra -> encodeToEra AlonzoEra pparams
-      BabbageEra -> pure pparams
-      ConwayEra -> encodeToEra ConwayEra pparams
+      BabbageEra -> encodeToEra BabbageEra pparams
+      ConwayEra -> pure pparams
 
 -- | Query 'GenesisParameters' at a given point.
 --