diff --git a/src/net.h b/src/net.h
index f54a8e0cdb7..d0cfe7c9ac3 100644
--- a/src/net.h
+++ b/src/net.h
@@ -831,6 +831,13 @@ public:
         return m_conn_type == ConnectionType::PRIVATE_BROADCAST;
     }
 
+    /** Protocol version advertised in our VERSION message.
+     *  Private broadcast connections use a fixed version to maximise anonymity. */
+    int AdvertisedVersion() const
+    {
+        return IsPrivateBroadcastConn() ? WTXID_RELAY_VERSION : PROTOCOL_VERSION;
+    }
+
     bool IsInboundConn() const {
         return m_conn_type == ConnectionType::INBOUND;
     }
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index 50ea62ff05c..def72704f7b 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -1575,7 +1575,7 @@ void PeerManagerImpl::PushNodeVersion(CNode& pnode, const Peer& peer)
     MakeAndPushMessage(
         pnode,
         NetMsgType::VERSION,
-        PROTOCOL_VERSION,
+        pnode.AdvertisedVersion(),
         my_services,
         my_time,
         // your_services + CNetAddr::V1(your_addr) is the pre-version-31402 serialization of your_addr (without nTime)
@@ -1589,7 +1589,7 @@ void PeerManagerImpl::PushNodeVersion(CNode& pnode, const Peer& peer)
 
     LogDebug(
         BCLog::NET, "send version message: version=%d, blocks=%d%s, txrelay=%d, peer=%d\n",
-        PROTOCOL_VERSION, my_height,
+        pnode.AdvertisedVersion(), my_height,
         fLogIPs ? strprintf(", them=%s", your_addr.ToStringAddrPort()) : "",
         my_tx_relay, pnode.GetId());
 }
@@ -3663,7 +3663,7 @@ void PeerManagerImpl::ProcessMessage(Peer& peer, CNode& pfrom, const std::string
         }
 
         // Change version
-        const int greatest_common_version = std::min(nVersion, PROTOCOL_VERSION);
+        const int greatest_common_version = std::min(nVersion, pfrom.AdvertisedVersion());
         pfrom.SetCommonVersion(greatest_common_version);
         pfrom.nVersion = nVersion;
 
diff --git a/src/test/util/net.cpp b/src/test/util/net.cpp
index c4850c64cfd..1415c8d4968 100644
--- a/src/test/util/net.cpp
+++ b/src/test/util/net.cpp
@@ -56,7 +56,7 @@ void ConnmanTestMsg::Handshake(CNode& node,
     FlushSendBuffer(node); // Drop the verack message added by SendMessages.
     if (node.fDisconnect) return;
     assert(node.nVersion == version);
-    assert(node.GetCommonVersion() == std::min(version, PROTOCOL_VERSION));
+    assert(node.GetCommonVersion() == std::min(version, node.AdvertisedVersion()));
     CNodeStateStats statestats;
     assert(peerman.GetNodeStateStats(node.GetId(), statestats));
     assert(statestats.m_relay_txs == (relay_txs && !node.IsBlockOnlyConn()));
diff --git a/test/functional/p2p_private_broadcast.py b/test/functional/p2p_private_broadcast.py
index e8eaee6f393..eac0d6102e5 100755
--- a/test/functional/p2p_private_broadcast.py
+++ b/test/functional/p2p_private_broadcast.py
@@ -14,7 +14,6 @@ from test_framework.p2p import (
     P2PDataStore,
     P2PInterface,
     P2P_SERVICES,
-    P2P_VERSION,
     start_p2p_listener,
 )
 from test_framework.messages import (
@@ -46,6 +45,7 @@ from test_framework.wallet import (
     MiniWallet,
 )
 
+P2P_PRIVATE_VERSION = 70016
 NUM_PRIVATE_BROADCAST_PER_TX = 3
 
 
@@ -195,7 +195,7 @@ class P2PPrivateBroadcast(BitcoinTestFramework):
             })
             dummy_address = CAddress()
             dummy_address.nServices = 0
-            assert_equal(peer.last_message["version"].nVersion, P2P_VERSION)
+            assert_equal(peer.last_message["version"].nVersion, P2P_PRIVATE_VERSION)
             assert_equal(peer.last_message["version"].nServices, 0)
             assert_equal(peer.last_message["version"].nTime, 0)
             assert_equal(peer.last_message["version"].addrTo, dummy_address)