diff --git a/doc/release-notes.md b/doc/release-notes.md
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -6,3 +6,4 @@
 
 - The RPC `getrpcinfo` returns runtime details of the RPC server. At the moment
   it returns the active commands and the corresponding execution time.
+- Bump automatic replay protection to Nov 2020 upgrade.
diff --git a/src/chainparams.cpp b/src/chainparams.cpp
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -134,6 +134,9 @@
         // May 15, 2020 12:00:00 UTC protocol upgrade
         consensus.phononActivationTime = 1589544000;
 
+        // Nov 15, 2020 12:00:00 UTC protocol upgrade
+        consensus.axionActivationTime = 1605441600;
+
         /**
          * The message start string is designed to be unlikely to occur in
          * normal data. The characters are rarely used upper ASCII, not valid as
@@ -318,6 +321,9 @@
         // May 15, 2020 12:00:00 UTC protocol upgrade
         consensus.phononActivationTime = 1589544000;
 
+        // Nov 15, 2020 12:00:00 UTC protocol upgrade
+        consensus.axionActivationTime = 1605441600;
+
         diskMagic[0] = 0x0b;
         diskMagic[1] = 0x11;
         diskMagic[2] = 0x09;
@@ -453,6 +459,9 @@
         // May 15, 2020 12:00:00 UTC protocol upgrade
         consensus.phononActivationTime = 1589544000;
 
+        // Nov 15, 2020 12:00:00 UTC protocol upgrade
+        consensus.axionActivationTime = 1605441600;
+
         diskMagic[0] = 0xfa;
         diskMagic[1] = 0xbf;
         diskMagic[2] = 0xb5;
diff --git a/src/consensus/params.h b/src/consensus/params.h
--- a/src/consensus/params.h
+++ b/src/consensus/params.h
@@ -80,6 +80,8 @@
     int gravitonHeight;
     /** Unix time used for MTP activation of 15 May 2020 12:00:00 UTC upgrade */
     int phononActivationTime;
+    /** Unix time used for MTP activation of 15 Nov 2020 12:00:00 UTC upgrade */
+    int axionActivationTime;
 
     /**
      * Don't warn about unknown BIP 9 activations below this height.
diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -460,7 +460,7 @@
 static bool IsReplayProtectionEnabled(const Consensus::Params &params,
                                       int64_t nMedianTimePast) {
     return nMedianTimePast >= gArgs.GetArg("-replayprotectionactivationtime",
-                                           params.phononActivationTime);
+                                           params.axionActivationTime);
 }
 
 static bool IsReplayProtectionEnabled(const Consensus::Params &params,