diff --git a/src/consensus/params.h b/src/consensus/params.h
--- a/src/consensus/params.h
+++ b/src/consensus/params.h
@@ -63,6 +63,8 @@
     int cowperthwaiteHeight;
     /** Unix time used for MTP activation of 15 May 2025 12:00:00 UTC upgrade */
     int schumpeterActivationTime;
+    /** Unix time used for MTP activation of 15 Nov 2025 12:00:00 UTC upgrade */
+    int shibusawaActivationTime;
 
     /** Enable or disable the miner fund by default */
     bool enableMinerFund;
diff --git a/src/kernel/chainparams.cpp b/src/kernel/chainparams.cpp
--- a/src/kernel/chainparams.cpp
+++ b/src/kernel/chainparams.cpp
@@ -149,6 +149,9 @@
         // May 15, 2025 12:00:00 UTC protocol upgrade
         consensus.schumpeterActivationTime = 1747310400;
 
+        // Nov. 15, 2025 12:00:00 UTC protocol upgrade
+        consensus.shibusawaActivationTime = 1763208000;
+
         /**
          * The message start string is designed to be unlikely to occur in
          * normal data. The characters are rarely used upper ASCII, not valid as
@@ -300,6 +303,9 @@
         // May 15, 2025 12:00:00 UTC protocol upgrade
         consensus.schumpeterActivationTime = 1747310400;
 
+        // Nov. 15, 2025 12:00:00 UTC protocol upgrade
+        consensus.shibusawaActivationTime = 1763208000;
+
         diskMagic[0] = 0x0b;
         diskMagic[1] = 0x11;
         diskMagic[2] = 0x09;
@@ -433,6 +439,9 @@
         // May 15, 2025 12:00:00 UTC protocol upgrade
         consensus.schumpeterActivationTime = 1747310400;
 
+        // Nov. 15, 2025 12:00:00 UTC protocol upgrade
+        consensus.shibusawaActivationTime = 1763208000;
+
         diskMagic[0] = 0xfa;
         diskMagic[1] = 0xbf;
         diskMagic[2] = 0xb5;
diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -226,7 +226,7 @@
 static bool IsReplayProtectionEnabled(const Consensus::Params &params,
                                       int64_t nMedianTimePast) {
     return nMedianTimePast >= gArgs.GetIntArg("-replayprotectionactivationtime",
-                                              params.schumpeterActivationTime);
+                                              params.shibusawaActivationTime);
 }
 
 static bool IsReplayProtectionEnabled(const Consensus::Params &params,