diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 00a95a1185a..afccc6de4b1 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -121,6 +121,7 @@ class CMainParams : public CChainParams {
         consensus.ClarkeQuayHeight = 595738;
         consensus.DakotaHeight = 678000; // 1st March 2021
         consensus.DakotaCrescentHeight = 733000; // 25th March 2021
+        consensus.EunosHeight = std::numeric_limits<int>::max(); // 30th March 2021
 
         consensus.pos.diffLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 //        consensus.pos.nTargetTimespan = 14 * 24 * 60 * 60; // two weeks
@@ -305,6 +306,7 @@ class CTestNetParams : public CChainParams {
         consensus.ClarkeQuayHeight = 155000;
         consensus.DakotaHeight = 220680;
         consensus.DakotaCrescentHeight = 287700;
+        consensus.EunosHeight = std::numeric_limits<int>::max(); // 30th March 2021
 
         consensus.pos.diffLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 //        consensus.pos.nTargetTimespan = 14 * 24 * 60 * 60; // two weeks
@@ -454,6 +456,7 @@ class CDevNetParams : public CChainParams {
         consensus.ClarkeQuayHeight = 0;
         consensus.DakotaHeight = 0;
         consensus.DakotaCrescentHeight = 0;
+        consensus.EunosHeight = 0;
 
         consensus.pos.diffLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
         consensus.pos.nTargetTimespan = 5 * 60; // 5 min == 10 blocks
@@ -595,6 +598,7 @@ class CRegTestParams : public CChainParams {
         consensus.ClarkeQuayHeight = 10000000;
         consensus.DakotaHeight = 10000000;
         consensus.DakotaCrescentHeight = 10000000;
+        consensus.EunosHeight = 10000000;
 
         consensus.pos.diffLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
         consensus.pos.nTargetTimespan = 14 * 24 * 60 * 60; // two weeks
@@ -809,6 +813,17 @@ void CRegTestParams::UpdateActivationParametersFromArgs(const ArgsManager& args)
         consensus.DakotaCrescentHeight = static_cast<int>(height);
     }
 
+    if (gArgs.IsArgSet("-eunosheight")) {
+        int64_t height = gArgs.GetArg("-eunosheight", consensus.EunosHeight);
+        if (height < -1 || height >= std::numeric_limits<int>::max()) {
+            throw std::runtime_error(strprintf("Activation height %ld for Eunos is out of valid range. Use -1 to disable Eunos features.", height));
+        } else if (height == -1) {
+            LogPrintf("Eunos disabled for testing\n");
+            height = std::numeric_limits<int>::max();
+        }
+        consensus.EunosHeight = static_cast<int>(height);
+    }
+
     if (!args.IsArgSet("-vbparams")) return;
 
     for (const std::string& strDeployment : args.GetArgs("-vbparams")) {
diff --git a/src/consensus/params.h b/src/consensus/params.h
index d627e0624b1..52c2e27ca33 100644
--- a/src/consensus/params.h
+++ b/src/consensus/params.h
@@ -82,6 +82,8 @@ struct Params {
     int DakotaHeight;
     /** Fifth major fork **/
     int DakotaCrescentHeight;
+    /** Sixth major fork **/
+    int EunosHeight;
     /** Foundation share after AMK, normalized to COIN = 100% */
     CAmount foundationShareDFIP1;
 
diff --git a/src/init.cpp b/src/init.cpp
index 8383fca3a85..8e461d57a9a 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -468,6 +468,7 @@ void SetupServerArgs()
     gArgs.AddArg("-clarkequayheight", "ClarkeQuay fork activation height (regtest only)", ArgsManager::ALLOW_ANY, OptionsCategory::CHAINPARAMS);
     gArgs.AddArg("-dakotaheight", "Dakota fork activation height (regtest only)", ArgsManager::ALLOW_ANY, OptionsCategory::CHAINPARAMS);
     gArgs.AddArg("-dakotacrescentheight", "DakotaCrescent fork activation height (regtest only)", ArgsManager::ALLOW_ANY, OptionsCategory::CHAINPARAMS);
+    gArgs.AddArg("-eunosheight", "Eunos fork activation height (regtest only)", ArgsManager::ALLOW_ANY, OptionsCategory::CHAINPARAMS);
 #ifdef USE_UPNP
 #if USE_UPNP
     gArgs.AddArg("-upnp", "Use UPnP to map the listening port (default: 1 when listening and no -proxy)", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION);
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index 08117f51780..9726f281638 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -1324,6 +1324,7 @@ UniValue getblockchaininfo(const JSONRPCRequest& request)
     BuriedForkDescPushBack(softforks, "clarkequay", consensusParams.ClarkeQuayHeight);
     BuriedForkDescPushBack(softforks, "dakota", consensusParams.DakotaHeight);
     BuriedForkDescPushBack(softforks, "dakotacrescent", consensusParams.DakotaCrescentHeight);
+    BuriedForkDescPushBack(softforks, "eunos", consensusParams.EunosHeight);
     BIP9SoftForkDescPushBack(softforks, "testdummy", consensusParams, Consensus::DEPLOYMENT_TESTDUMMY);
     obj.pushKV("softforks",             softforks);
 
diff --git a/test/functional/rpc_blockchain.py b/test/functional/rpc_blockchain.py
index de8457b71b5..674b96adff5 100755
--- a/test/functional/rpc_blockchain.py
+++ b/test/functional/rpc_blockchain.py
@@ -134,6 +134,7 @@ def _test_getblockchaininfo(self):
             'clarkequay': {'type': 'buried', 'active': False, 'height': 10000000},
             'dakota': {'type': 'buried', 'active': False, 'height': 10000000},
             'dakotacrescent': {'type': 'buried', 'active': False, 'height': 10000000},
+            'eunos': {'type': 'buried', 'active': False, 'height': 10000000},
             'testdummy': {
                 'type': 'bip9',
                 'bip9': {