diff --git a/cardano-diffusion/api/lib/Cardano/Network/NodeToClient/Version.hs b/cardano-diffusion/api/lib/Cardano/Network/NodeToClient/Version.hs
index cd52bcac113..86553eb923e 100644
--- a/cardano-diffusion/api/lib/Cardano/Network/NodeToClient/Version.hs
+++ b/cardano-diffusion/api/lib/Cardano/Network/NodeToClient/Version.hs
@@ -63,6 +63,8 @@ data NodeToClientVersion
     | NodeToClientV_23
     -- ^ added @QueryDRepsDelegations@,
     -- LedgerPeerSnapshot CBOR encoding contains block hash and NetworkMagic
+    | NodeToClientV_24
+    -- ^ added @ValidateTx@ query
   deriving (Eq, Ord, Enum, Bounded, Show, Generic, NFData)
 
 -- | We set 16ths bit to distinguish `NodeToNodeVersion` and
@@ -84,6 +86,7 @@ nodeToClientVersionCodec = CodecCBORTerm { encodeTerm, decodeTerm }
           NodeToClientV_21 -> enc 21
           NodeToClientV_22 -> enc 22
           NodeToClientV_23 -> enc 23
+          NodeToClientV_24 -> enc 24
         where
           enc :: Int -> CBOR.Term
           enc = CBOR.TInt . (`setBit` nodeToClientVersionBit)
@@ -98,6 +101,7 @@ nodeToClientVersionCodec = CodecCBORTerm { encodeTerm, decodeTerm }
             21 -> Right NodeToClientV_21
             22 -> Right NodeToClientV_22
             23 -> Right NodeToClientV_23
+            24 -> Right NodeToClientV_24
             n  -> Left (unknownTag n)
         where
           dec :: CBOR.Term -> Either (Text, Maybe Int) Int
diff --git a/cardano-diffusion/orphan-instances/Cardano/Network/OrphanInstances.hs b/cardano-diffusion/orphan-instances/Cardano/Network/OrphanInstances.hs
index 463a45a0a4e..e3d37210744 100644
--- a/cardano-diffusion/orphan-instances/Cardano/Network/OrphanInstances.hs
+++ b/cardano-diffusion/orphan-instances/Cardano/Network/OrphanInstances.hs
@@ -79,6 +79,7 @@ instance FromJSON NodeToClientVersion where
     Number 21 -> pure NodeToClientV_21
     Number 22 -> pure NodeToClientV_22
     Number 23 -> pure NodeToClientV_23
+    Number 24 -> pure NodeToClientV_24
     Number x  -> fail $ "FromJSON.NodeToClientVersion: unsupported node-to-client protocol version " ++ show x
     x         -> fail $ "FromJSON.NodeToClientVersion: error parsing NodeToClientVersion: " ++ show x
 
@@ -92,6 +93,7 @@ instance ToJSON NodeToClientVersion where
     NodeToClientV_21 -> Number 21
     NodeToClientV_22 -> Number 22
     NodeToClientV_23 -> Number 23
+    NodeToClientV_24 -> Number 24
 
 instance ToJSON NodeToNodeVersionData where
   toJSON (NodeToNodeVersionData (NetworkMagic m) dm ps q) = object