diff --git a/src/pool_block.h b/src/pool_block.h
index 5f87859..c00f28b 100644
--- a/src/pool_block.h
+++ b/src/pool_block.h
@@ -63,8 +63,8 @@ static constexpr uint64_t MAX_SIDECHAIN_HEIGHT = 31556952000ULL;
 static constexpr uint64_t MERGE_MINING_MAX_CHAINS = 256;
 static constexpr uint64_t LOG2_MERGE_MINING_MAX_CHAINS = 8;
 
-// TBD
-static constexpr uint64_t MERGE_MINING_FORK_TIME = std::numeric_limits<uint64_t>::max();
+// Oct 12 2024 20:00:00 GMT+0000
+static constexpr uint64_t MERGE_MINING_FORK_TIME = 1728763200;
 
 // Jun 18 2024 20:00:00 GMT+0000
 static constexpr uint64_t MERGE_MINING_TESTNET_FORK_TIME = 1718740800;