diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 8d902e86f..1e20400f9 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -61,16 +61,18 @@ static Checkpoints::MapCheckpoints mapCheckpoints =
         (  200000,  uint256("e6f984e3fe6bf992d640f30ad3c28777b303b4b3b59bd7bf3f696566abe08c13") )
         (  300000,  uint256("d6b6250ec6bedf74663a10babf5774562736fa99f7dd0a53841a4c95b1b8ec11") )
         (  400000,  uint256("507851828598daf03711e6eaed1709f17837a105dd62209ff68d2cf1dc6ddf7a") )
-        (  550001,  uint256("aa063547717c4e9f1f1593a580143491896cde85a0b369442d629cd364a1b78d") ) // Zerocoin Start (v8)    1521903907   1464462
-        (  550142,  uint256("4a9e4ee53bc441e0aadf788b5daa9b8d01a3a6debed01b5c599d6f7e22f4f7d0") ) //                        1521912217   1464746
-        (  552317,  uint256("654cf4e6d0e9d8249075c674a54859849b2648cfe35ea71e25bd6394f24331b2") ) // Last block             1522095098   1469475
-        (  853104,  uint256("9623e2c68f6eab9f91ac9ca4b65a2049a05f223f970ca2d3cf8280ad1ead5efc") ) // v3.1.0                 1540360964   2232434
-        (  860817,  uint256("b78531efc5d878f8afc5aa9fd349d0181e8cc213853251aad63839d59781a716") ) // v3.1.1                 1540827763   2251929
-        (  886654,  uint256("c816d0e907ab44f43ec6bef321ac2c9b4e4a578c9ee4e7946e4a74c3073edf66") );// v3.1.1                 1542390128   2316854
+        (  550001,  uint256("aa063547717c4e9f1f1593a580143491896cde85a0b369442d629cd364a1b78d") ) // Zerocoin Start (v8)            1521903907   1464462
+        (  550142,  uint256("4a9e4ee53bc441e0aadf788b5daa9b8d01a3a6debed01b5c599d6f7e22f4f7d0") ) //                                1521912217   1464746
+        (  552317,  uint256("654cf4e6d0e9d8249075c674a54859849b2648cfe35ea71e25bd6394f24331b2") ) // Last block                     1522095098   1469475
+        (  853104,  uint256("9623e2c68f6eab9f91ac9ca4b65a2049a05f223f970ca2d3cf8280ad1ead5efc") ) // v3.1.0                         1540360964   2232434
+        (  860817,  uint256("b78531efc5d878f8afc5aa9fd349d0181e8cc213853251aad63839d59781a716") ) //                                1540827763   2251929
+        (  886654,  uint256("c816d0e907ab44f43ec6bef321ac2c9b4e4a578c9ee4e7946e4a74c3073edf66") ) //                                1542390128   2316854
+        (  908698,  uint256("aa44b1eebd7ad5d4bc7b428dcdacd527677fa639557b58666a68dc2fdba3f133") ) // Last active zerocoin v1 block  1543722397   2371470 (zerocoin v1 disabled: 1543722400)
+        (  908810,  uint256("693fdafe0714de0dc2a457f1932187a722d9911eeaf068f5542164a2de053d71") ); //                               1543729708   2371718
 static const Checkpoints::CCheckpointData data = {
     &mapCheckpoints,
-    1542390128, // * UNIX timestamp of last checkpoint block
-    2316854,    // * total number of transactions between genesis and last checkpoint
+    1543729708, // * UNIX timestamp of last checkpoint block
+    2371718,    // * total number of transactions between genesis and last checkpoint
                 //   (the tx=... number in the SetBestChain debug.log lines)
     2000 	// * estimated number of transactions per day after checkp
 };