diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 23544f488..39ad31c5f 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -75,6 +75,7 @@ public:
          */
         const char* pszTimestamp = "Zcash0b9c4eef8b7cc417ee5001e3500984b6fea35683a7cac141a043c42064835d34";
         CMutableTransaction txNew;
+        txNew.nVersion = 1;
         txNew.vin.resize(1);
         txNew.vout.resize(1);
         txNew.vin[0].scriptSig = CScript() << 520617983 << CScriptNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp
index 0db80ec3e..0ef66f6c7 100644
--- a/src/test/miner_tests.cpp
+++ b/src/test/miner_tests.cpp
@@ -165,6 +165,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
         // will be closer to the tip, and blocks will appear slower.
         pblock->nTime = chainActive.Tip()->GetMedianTimePast()+6*Params().GetConsensus().nPowTargetSpacing;
         CMutableTransaction txCoinbase(pblock->vtx[0]);
+        txCoinbase.nVersion = 1;
         txCoinbase.vin[0].scriptSig = CScript() << (chainActive.Height()+1) << OP_0;
         txCoinbase.vout[0].scriptPubKey = CScript();
         pblock->vtx[0] = CTransaction(txCoinbase);