diff --git a/realm/realm-library/src/androidTest/java/io/realm/RealmResultsTests.java b/realm/realm-library/src/androidTest/java/io/realm/RealmResultsTests.java
index de9dca6e33..9577cfaadb 100644
--- a/realm/realm-library/src/androidTest/java/io/realm/RealmResultsTests.java
+++ b/realm/realm-library/src/androidTest/java/io/realm/RealmResultsTests.java
@@ -33,6 +33,7 @@
 
 import java.math.BigDecimal;
 import java.text.SimpleDateFormat;
+import java.time.temporal.ChronoUnit;
 import java.util.Arrays;
 import java.util.Calendar;
 import java.util.Collection;
@@ -1939,7 +1940,7 @@ public void setValue_specificType_internalNameOnDynamicRealms() {
 
     @Test
     public void asJSON() throws JSONException {
-        Date date = Calendar.getInstance().getTime();
+        Date date = Date.from(Calendar.getInstance().getTime().toInstant().truncatedTo(ChronoUnit.SECONDS));
         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         sdf.setTimeZone(TimeZone.getTimeZone("GMT")); // Core return dates in UTC time
         String now = sdf.format(date);
@@ -2144,7 +2145,7 @@ public void asJSON_withEscaping() throws JSONException {
 
     @Test
     public void asJSON_cycles() throws JSONException {
-        Date date = Calendar.getInstance().getTime();
+        Date date = Date.from(Calendar.getInstance().getTime().toInstant().truncatedTo(ChronoUnit.SECONDS));
         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         sdf.setTimeZone(TimeZone.getTimeZone("GMT")); // Core return dates in UTC time
         String now = sdf.format(date);
diff --git a/realm/realm-library/src/main/cpp/realm-core b/realm/realm-library/src/main/cpp/realm-core
index fb5bdccba1..96b1fd7165 160000
--- a/realm/realm-library/src/main/cpp/realm-core
+++ b/realm/realm-library/src/main/cpp/realm-core
@@ -1 +1 @@
-Subproject commit fb5bdccba1daad0bd6e65757a6a1596dc98cebf4
+Subproject commit 96b1fd71657d5bfb8c35908c67766e52b41bf4a5