diff --git a/core/src/test/java/org/bitcoinj/core/BlockTest.java b/core/src/test/java/org/bitcoinj/core/BlockTest.java
index a523416c878..9557e678cae 100644
--- a/core/src/test/java/org/bitcoinj/core/BlockTest.java
+++ b/core/src/test/java/org/bitcoinj/core/BlockTest.java
@@ -312,7 +312,8 @@ public void isBIPs() throws Exception {
     @Test
     public void parseBlockWithHugeDeclaredTransactionsSize() {
         Context.propagate(new Context(100, Transaction.DEFAULT_TX_FEE, false, true));
-        Block block = new Block(1, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 1, 1, 1, new ArrayList<Transaction>()) {
+        Block block = new Block(1, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, Instant.ofEpochSecond(1), 1, 1,
+                new ArrayList<Transaction>()) {
             @Override
             protected void bitcoinSerializeToStream(OutputStream stream) throws IOException {
                 ByteUtils.writeInt32LE(getVersion(), stream);
diff --git a/core/src/test/java/org/bitcoinj/store/SPVBlockStoreTest.java b/core/src/test/java/org/bitcoinj/store/SPVBlockStoreTest.java
index 73b450c9fe7..e31b03be8f5 100644
--- a/core/src/test/java/org/bitcoinj/store/SPVBlockStoreTest.java
+++ b/core/src/test/java/org/bitcoinj/store/SPVBlockStoreTest.java
@@ -154,7 +154,7 @@ public void performanceTest() throws BlockStoreException {
         Stopwatch watch = Stopwatch.start();
         for (int i = 0; i < ITERATIONS; i++) {
             // Using i as the nonce so that the block hashes are different.
-            Block block = new Block(0, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 0, 0, i,
+            Block block = new Block(0, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, Instant.EPOCH, 0, i,
                     Collections.emptyList());
             StoredBlock b = new StoredBlock(block, BigInteger.ZERO, i);
             store.put(b);