diff --git a/zebra-network/src/constants.rs b/zebra-network/src/constants.rs
index a116fd63018..acab966f40c 100644
--- a/zebra-network/src/constants.rs
+++ b/zebra-network/src/constants.rs
@@ -396,14 +396,14 @@ lazy_static! {
     ///
     /// The minimum network protocol version typically changes after Mainnet and
     /// Testnet network upgrades.
-    // TODO: Change `Nu5` to `Nu6` after NU6 activation.
+    // TODO: Change `Nu6` to `Nu7` after NU7 activation.
     // TODO: Move the value here to a field on `testnet::Parameters` (#8367)
     pub static ref INITIAL_MIN_NETWORK_PROTOCOL_VERSION: HashMap<NetworkKind, Version> = {
         let mut hash_map = HashMap::new();
 
-        hash_map.insert(NetworkKind::Mainnet, Version::min_specified_for_upgrade(&Mainnet, Nu5));
-        hash_map.insert(NetworkKind::Testnet, Version::min_specified_for_upgrade(&Network::new_default_testnet(), Nu5));
-        hash_map.insert(NetworkKind::Regtest, Version::min_specified_for_upgrade(&Network::new_regtest(None, None), Nu5));
+        hash_map.insert(NetworkKind::Mainnet, Version::min_specified_for_upgrade(&Mainnet, Nu6));
+        hash_map.insert(NetworkKind::Testnet, Version::min_specified_for_upgrade(&Network::new_default_testnet(), Nu6));
+        hash_map.insert(NetworkKind::Regtest, Version::min_specified_for_upgrade(&Network::new_regtest(None, None), Nu6));
 
         hash_map
     };
diff --git a/zebra-network/src/peer_set/set/tests/vectors.rs b/zebra-network/src/peer_set/set/tests/vectors.rs
index 0a5d3d34eaf..9f8fbe1f136 100644
--- a/zebra-network/src/peer_set/set/tests/vectors.rs
+++ b/zebra-network/src/peer_set/set/tests/vectors.rs
@@ -26,7 +26,7 @@ fn peer_set_ready_single_connection() {
     let peer_versions = PeerVersions {
         peer_versions: vec![Version::min_specified_for_upgrade(
             &Network::Mainnet,
-            NetworkUpgrade::Nu5,
+            NetworkUpgrade::Nu6,
         )],
     };
 
@@ -118,7 +118,7 @@ fn peer_set_ready_single_connection() {
 #[test]
 fn peer_set_ready_multiple_connections() {
     // Use three peers with the same version
-    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu5);
+    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu6);
     let peer_versions = PeerVersions {
         peer_versions: vec![peer_version, peer_version, peer_version],
     };
@@ -182,7 +182,7 @@ fn peer_set_rejects_connections_past_per_ip_limit() {
     const NUM_PEER_VERSIONS: usize = crate::constants::DEFAULT_MAX_CONNS_PER_IP + 1;
 
     // Use three peers with the same version
-    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu5);
+    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu6);
     let peer_versions = PeerVersions {
         peer_versions: [peer_version; NUM_PEER_VERSIONS].into_iter().collect(),
     };
@@ -232,7 +232,7 @@ fn peer_set_route_inv_empty_registry() {
     let test_hash = block::Hash([0; 32]);
 
     // Use two peers with the same version
-    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu5);
+    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu6);
     let peer_versions = PeerVersions {
         peer_versions: vec![peer_version, peer_version],
     };
@@ -315,7 +315,7 @@ fn peer_set_route_inv_advertised_registry_order(advertised_first: bool) {
     let test_change = InventoryStatus::new_available(test_inv, test_peer);
 
     // Use two peers with the same version
-    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu5);
+    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu6);
     let peer_versions = PeerVersions {
         peer_versions: vec![peer_version, peer_version],
     };
@@ -423,7 +423,7 @@ fn peer_set_route_inv_missing_registry_order(missing_first: bool) {
     let test_change = InventoryStatus::new_missing(test_inv, test_peer);
 
     // Use two peers with the same version
-    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu5);
+    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu6);
     let peer_versions = PeerVersions {
         peer_versions: vec![peer_version, peer_version],
     };
@@ -525,7 +525,7 @@ fn peer_set_route_inv_all_missing_fail() {
     let test_change = InventoryStatus::new_missing(test_inv, test_peer);
 
     // Use one peer
-    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu5);
+    let peer_version = Version::min_specified_for_upgrade(&Network::Mainnet, NetworkUpgrade::Nu6);
     let peer_versions = PeerVersions {
         peer_versions: vec![peer_version],
     };