diff --git a/cardano-node/src/Cardano/Node/Protocol/Cardano.hs b/cardano-node/src/Cardano/Node/Protocol/Cardano.hs
index caa24132d04..051c241c847 100644
--- a/cardano-node/src/Cardano/Node/Protocol/Cardano.hs
+++ b/cardano-node/src/Cardano/Node/Protocol/Cardano.hs
@@ -171,7 +171,7 @@ mkSomeConsensusProtocolCardano NodeByronProtocolConfiguration {
                                             shelleyGenesisHash,
           shelleyBasedLeaderCredentials = shelleyLeaderCredentials
         }
-      , Consensus.cardanoProtocolVersion = ProtVer (natVersion @10) 0
+      , Consensus.cardanoProtocolVersion = ProtVer (natVersion @10) 1
         -- The remaining arguments specify the parameters needed to transition between two eras
       , Consensus.cardanoLedgerTransitionConfig =
           Ledger.mkLatestTransitionConfig
diff --git a/flake.lock b/flake.lock
index 82e94186fda..302c445df84 100644
--- a/flake.lock
+++ b/flake.lock
@@ -3,11 +3,11 @@
     "CHaP": {
       "flake": false,
       "locked": {
-        "lastModified": 1730295876,
-        "narHash": "sha256-ijnHTQ6eKIQ9FpEqDKt6c7vuFYN8aOBDhonp67utx2s=",
+        "lastModified": 1732639071,
+        "narHash": "sha256-XY+LlzuumeRovfBMXIPS90Trk7HTxpUMFFdL4bmMZDU=",
         "owner": "intersectmbo",
         "repo": "cardano-haskell-packages",
-        "rev": "25591f43ab943d5a070db5e8a2b9ff3a499d4d92",
+        "rev": "6df7fca74cc3a34babfa7ce7cb4b7a8c72c70982",
         "type": "github"
       },
       "original": {