diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index cad30c9a9..87936e1fb 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -104,8 +104,8 @@ public:
 
         // Deployment of BIP68, BIP112, and BIP113.
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
-        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1462060800; // May 1st, 2016
-        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1486252800; // Feb 5th, 2017
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1517788800; // Feb 5th, 2018
 
         /**
          * The message start string is designed to be unlikely to occur in normal data.