diff --git a/src/headerssync.cpp b/src/headerssync.cpp
index 04034fd51c58..308cc8410e35 100644
--- a/src/headerssync.cpp
+++ b/src/headerssync.cpp
@@ -13,11 +13,11 @@
 // contrib/devtools/headerssync-params.py.
 
 //! Store one header commitment per HEADER_COMMITMENT_PERIOD blocks.
-constexpr size_t HEADER_COMMITMENT_PERIOD{632};
+constexpr size_t HEADER_COMMITMENT_PERIOD{641};
 
 //! Only feed headers to validation once this many headers on top have been
 //! received and validated against commitments.
-constexpr size_t REDOWNLOAD_BUFFER_SIZE{15009}; // 15009/632 = ~23.7 commitments
+constexpr size_t REDOWNLOAD_BUFFER_SIZE{15218}; // 15218/641 = ~23.7 commitments
 
 // Our memory analysis assumes 48 bytes for a CompressedHeader (so we should
 // re-calculate parameters if we compress further)
diff --git a/src/kernel/chainparams.cpp b/src/kernel/chainparams.cpp
index 47fe82fa91fa..d2065b74f565 100644
--- a/src/kernel/chainparams.cpp
+++ b/src/kernel/chainparams.cpp
@@ -117,8 +117,8 @@ class CMainParams : public CChainParams {
         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
 
-        consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000dee8e2a309ad8a9820433c68"};
-        consensus.defaultAssumeValid = uint256{"00000000000000000000611fd22f2df7c8fbd0688745c3a6c3bb5109cc2a12cb"}; // 912683
+        consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000001128750f82f4c366153a3a030"};
+        consensus.defaultAssumeValid = uint256{"00000000000000000000ccebd6d74d9194d8dcdc1d177c478e094bfad51ba5ac"}; // 938343
 
         /**
          * The message start string is designed to be unlikely to occur in normal data.
@@ -131,7 +131,7 @@ class CMainParams : public CChainParams {
         pchMessageStart[3] = 0xd9;
         nDefaultPort = 8333;
         nPruneAfterHeight = 100000;
-        m_assumed_blockchain_size = 810;
+        m_assumed_blockchain_size = 856;
         m_assumed_chain_state_size = 14;
 
         genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
@@ -229,14 +229,20 @@ class CMainParams : public CChainParams {
                 .hash_serialized = AssumeutxoHash{uint256{"4daf8a17b4902498c5787966a2b51c613acdab5df5db73f196fa59a4da2f1568"}},
                 .m_chain_tx_count = 1226586151,
                 .blockhash = consteval_ctor(uint256{"0000000000000000000108970acb9522ffd516eae17acddcb1bd16469194a821"}),
+            },
+            {
+                .height = 935'000,
+                .hash_serialized = AssumeutxoHash{uint256{"e4b90ef9eae834f56c4b64d2d50143cee10ad87994c614d7d04125e2a6025050"}},
+                .m_chain_tx_count = 1305397408,
+                .blockhash = consteval_ctor(uint256{"0000000000000000000147034958af1652b2b91bba607beacc5e72a56f0fb5ee"}),
             }
         };
 
         chainTxData = ChainTxData{
-            // Data from RPC: getchaintxstats 4096 00000000000000000000611fd22f2df7c8fbd0688745c3a6c3bb5109cc2a12cb
-            .nTime    = 1756722903,
-            .tx_count = 1235299397,
-            .dTxRate  = 6.721086701157182,  // held back due to present abnormal tx rate
+            // Data from RPC: getchaintxstats 4096 00000000000000000000ccebd6d74d9194d8dcdc1d177c478e094bfad51ba5ac
+            .nTime    = 1772055173,
+            .tx_count = 1315805869,
+            .dTxRate  = 5.40111006496122,
         };
     }
 };