diff --git a/cabal.project b/cabal.project
index 074ef1f0477..ee4594fb8ab 100644
--- a/cabal.project
+++ b/cabal.project
@@ -43,3 +43,4 @@ benchmarks: True
 test-show-details: direct
 
 allow-newer: base
+allow-newer: plutus-ledger-api
diff --git a/hydra-cardano-api/hydra-cardano-api.cabal b/hydra-cardano-api/hydra-cardano-api.cabal
index 44d96b1bd61..0079aab438e 100644
--- a/hydra-cardano-api/hydra-cardano-api.cabal
+++ b/hydra-cardano-api/hydra-cardano-api.cabal
@@ -82,7 +82,7 @@ library
     , base                    >=4.16
     , base16-bytestring
     , bytestring
-    , cardano-api             ^>=9.1
+    , cardano-api             ^>=9.2
     , cardano-binary
     , cardano-crypto-class
     , cardano-ledger-allegra
diff --git a/hydra-cardano-api/src/Hydra/Cardano/Api.hs b/hydra-cardano-api/src/Hydra/Cardano/Api.hs
index 0b0817329cd..466d740712e 100644
--- a/hydra-cardano-api/src/Hydra/Cardano/Api.hs
+++ b/hydra-cardano-api/src/Hydra/Cardano/Api.hs
@@ -386,7 +386,7 @@ type TxBodyContent buidl = Cardano.Api.TxBodyContent buidl Era
 pattern TxBodyContent ::
   TxIns buidl ->
   TxInsCollateral ->
-  TxInsReference buidl ->
+  TxInsReference ->
   [TxOut CtxTx] ->
   TxTotalCollateral Era ->
   TxReturnCollateral CtxTx Era ->
@@ -404,7 +404,7 @@ pattern TxBodyContent ::
   TxScriptValidity ->
   Maybe (Featured ConwayEraOnwards Era (TxProposalProcedures buidl Era)) ->
   Maybe (Featured ConwayEraOnwards Era (TxVotingProcedures buidl Era)) ->
-  Maybe (Featured ConwayEraOnwards Era Coin) ->
+  Maybe (Featured ConwayEraOnwards Era (Maybe Coin)) ->
   Maybe (Featured ConwayEraOnwards Era Coin) ->
   TxBodyContent buidl
 pattern TxBodyContent
@@ -515,17 +515,17 @@ type TxIns buidl = [(TxIn, BuildTxWith buidl (Cardano.Api.Witness WitCtxTxIn Era
 
 -- ** TxInsReference
 
-type TxInsReference buidl = Cardano.Api.TxInsReference buidl Era
+type TxInsReference = Cardano.Api.TxInsReference Era
 {-# COMPLETE TxInsReferenceNone, TxInsReference #-}
 
-pattern TxInsReferenceNone :: TxInsReference buidl
+pattern TxInsReferenceNone :: TxInsReference
 pattern TxInsReferenceNone <-
   Cardano.Api.TxInsReferenceNone
   where
     TxInsReferenceNone =
       Cardano.Api.TxInsReferenceNone
 
-pattern TxInsReference :: [TxIn] -> TxInsReference buidl
+pattern TxInsReference :: [TxIn] -> TxInsReference
 pattern TxInsReference{txInsReference'} <-
   Cardano.Api.TxInsReference _ txInsReference'
   where
diff --git a/hydra-plutus/hydra-plutus.cabal b/hydra-plutus/hydra-plutus.cabal
index fce12d16db3..3ea473502af 100644
--- a/hydra-plutus/hydra-plutus.cabal
+++ b/hydra-plutus/hydra-plutus.cabal
@@ -69,10 +69,10 @@ library
     , hydra-cardano-api
     , hydra-plutus-extras
     , hydra-prelude
-    , plutus-core          >=1.21
-    , plutus-ledger-api    >=1.21
-    , plutus-tx            >=1.21
-    , plutus-tx-plugin     >=1.21
+    , plutus-core          >=1.31
+    , plutus-ledger-api    >=1.31
+    , plutus-tx            >=1.31
+    , plutus-tx-plugin     >=1.31
     , QuickCheck
     , serialise
     , template-haskell