diff --git a/Tzkt.Sync/Protocols/Handlers/Proto21/Activation/ProtoActivator.cs b/Tzkt.Sync/Protocols/Handlers/Proto21/Activation/ProtoActivator.cs
index adc5f08d..221cfdcd 100644
--- a/Tzkt.Sync/Protocols/Handlers/Proto21/Activation/ProtoActivator.cs
+++ b/Tzkt.Sync/Protocols/Handlers/Proto21/Activation/ProtoActivator.cs
@@ -22,6 +22,8 @@ protected override void UpgradeParameters(Protocol protocol, Protocol prev)
                 protocol.SmartRollupChallengeWindow = prev.SmartRollupChallengeWindow * 5 / 4;
                 protocol.SmartRollupTimeoutPeriod = prev.SmartRollupTimeoutPeriod * 5 / 4;
                 protocol.BlocksPerSnapshot = protocol.BlocksPerCycle;
+                protocol.MaxExternalOverOwnStakeRatio = 9;
+                protocol.StakePowerMultiplier = 3;
             }
         }
 
diff --git a/Tzkt.Sync/Protocols/Handlers/Proto21/Proto21Handler.cs b/Tzkt.Sync/Protocols/Handlers/Proto21/Proto21Handler.cs
index 1a3c2167..086bcdbf 100644
--- a/Tzkt.Sync/Protocols/Handlers/Proto21/Proto21Handler.cs
+++ b/Tzkt.Sync/Protocols/Handlers/Proto21/Proto21Handler.cs
@@ -14,7 +14,7 @@ class Proto21Handler : ProtocolHandler
         public override IDiagnostics Diagnostics { get; }
         public override IValidator Validator { get; }
         public override IRpc Rpc { get; }
-        public override string VersionName => "beta";
+        public override string VersionName => "quebec_021";
         public override int VersionNumber => 21;
 
         public Proto21Handler(TezosNode node, TzktContext db, CacheService cache, QuotesService quotes, IServiceProvider services, IConfiguration config, ILogger<Proto21Handler> logger, IMetrics metrics)
diff --git a/Tzkt.Sync/Protocols/Helpers/Chains.cs b/Tzkt.Sync/Protocols/Helpers/Chains.cs
index 246ddc63..4c88d2b7 100644
--- a/Tzkt.Sync/Protocols/Helpers/Chains.cs
+++ b/Tzkt.Sync/Protocols/Helpers/Chains.cs
@@ -18,8 +18,7 @@ static class Chains
             "NetXyuzvDo2Ugzb" => "nairobinet",
             "NetXxWsskGahzQB" => "oxfordnet",
             "NetXXWAHLEvre9b" => "parisnet",
-            "NetXyNQFuy15fmq" => "betanet",
-            "NetXsTfFgyGbHTz" => "betanet",
+            "NetXuTeGinLEqxp" => "quebecnet",
             _ => "private"
         };
     }
diff --git a/Tzkt.Sync/Protocols/TezosProtocols.cs b/Tzkt.Sync/Protocols/TezosProtocols.cs
index cd3d29f9..2ed7994c 100644
--- a/Tzkt.Sync/Protocols/TezosProtocols.cs
+++ b/Tzkt.Sync/Protocols/TezosProtocols.cs
@@ -95,7 +95,7 @@ private static ProtocolHandler GetProtocolHandler(IServiceProvider services, str
                 "PtParisBxoLz5gzMmn3d9WBQNoPSZakgnkMC2VNuQ3KXfUtUQeZ" => services.GetRequiredService<Proto19Handler>(),
                 "PsParisCZo7KAh1Z1smVd9ZMZ1HHn5gkzbM94V3PLCpknFWhUAi" => services.GetRequiredService<Proto20Handler>(),
                 "PtA4NFGxa5mLmPaEAAxAofESvLzZPSJ6GQz66SobecGbnCy3FXE" => services.GetRequiredService<Proto21Handler>(),
-                "PtBetaaEZxGcn9JDpkpAZ6E92Kh7bQb5FDoTCeYhmkfcwNehZcT" => services.GetRequiredService<Proto21Handler>(),
+                "PsQuebecnLByd3JwTiGadoG4nGWi3HYiLXUjkibeFV8dCFeVMUg" => services.GetRequiredService<Proto21Handler>(),
                 _ => null,
             };
         }