diff --git a/cardano-node/src/Cardano/Node/Protocol/Cardano.hs b/cardano-node/src/Cardano/Node/Protocol/Cardano.hs
index e4efea5ab0a..2477c3d438f 100644
--- a/cardano-node/src/Cardano/Node/Protocol/Cardano.hs
+++ b/cardano-node/src/Cardano/Node/Protocol/Cardano.hs
@@ -179,7 +179,7 @@ mkSomeConsensusProtocolCardano NodeByronProtocolConfiguration {
           shelleyBasedLeaderCredentials = shelleyLeaderCredentials
         }
       , Consensus.cardanoProtocolVersion = if npcExperimentalHardForksEnabled
-                                           then ProtVer (natVersion @11) 0
+                                           then ProtVer (natVersion @12) 0
                                            else ProtVer (natVersion @10) 7
         -- The remaining arguments specify the parameters needed to transition between two eras
       , Consensus.cardanoLedgerTransitionConfig =