diff --git a/integ-test/src/integration/resources/aws-logs/vpc_flow.sql b/integ-test/src/integration/resources/aws-logs/vpc_flow.sql
index 77e27ab88..7c1f4084f 100644
--- a/integ-test/src/integration/resources/aws-logs/vpc_flow.sql
+++ b/integ-test/src/integration/resources/aws-logs/vpc_flow.sql
@@ -21,9 +21,9 @@ OPTIONS (
 );
 
 INSERT INTO {table_name} VALUES
-    (1, '123456789012', 'eni-abc123', '10.0.0.1', '10.0.0.2', 12345, 80, 6, 10, 200, 1622548800, 1622548860, 'ACCEPT', 'OK'),  -- 5:00:00 AM to 5:01:00 AM PDT
-    (2, '123456789012', 'eni-def456', '10.0.0.1', '10.0.0.2', 12346, 443, 6, 5, 150, 1622548900, 1622548960, 'ACCEPT', 'OK'),  -- 5:01:40 AM to 5:02:40 AM PDT
-    (3, '123456789013', 'eni-ghi789', '10.0.0.3', '10.0.0.4', 12347, 22, 6, 15, 300, 1622549400, 1622549460, 'ACCEPT', 'OK'),  -- 5:10:00 AM to 5:11:00 AM PDT
-    (4, '123456789013', 'eni-jkl012', '10.0.0.5', '10.0.0.6', 12348, 21, 6, 20, 400, 1622549500, 1622549560, 'REJECT', 'OK'),  -- 5:11:40 AM to 5:12:40 AM PDT
-    (5, '123456789014', 'eni-mno345', '10.0.0.7', '10.0.0.8', 12349, 25, 6, 25, 500, 1622550000, 1622550060, 'ACCEPT', 'OK')   -- 5:20:00 AM to 5:21:00 AM PDT
+    (1, '123456789012', 'eni-abc123', '10.0.0.1', '10.0.0.2', 12345, 80, 6, 10, 200, 1698814800, 1698814860, 'ACCEPT', 'OK'),  -- 05:00:00 to 05:01:00 UTC
+    (2, '123456789012', 'eni-def456', '10.0.0.1', '10.0.0.2', 12346, 443, 6, 5, 150, 1698814900, 1698814960, 'ACCEPT', 'OK'),  -- 05:01:40 to 05:02:40 UTC
+    (3, '123456789013', 'eni-ghi789', '10.0.0.3', '10.0.0.4', 12347, 22, 6, 15, 300, 1698815400, 1698815460, 'ACCEPT', 'OK'),  -- 05:10:00 to 05:11:00 UTC
+    (4, '123456789013', 'eni-jkl012', '10.0.0.5', '10.0.0.6', 12348, 21, 6, 20, 400, 1698815500, 1698815560, 'REJECT', 'OK'),  -- 05:11:40 to 05:12:40 UTC
+    (5, '123456789014', 'eni-mno345', '10.0.0.7', '10.0.0.8', 12349, 25, 6, 25, 500, 1698816000, 1698816060, 'ACCEPT', 'OK')   -- 05:20:00 to 05:21:00 UTC
 ;
diff --git a/integ-test/src/integration/scala/org/opensearch/flint/spark/FlintSparkMaterializedViewIntegrationsITSuite.scala b/integ-test/src/integration/scala/org/opensearch/flint/spark/FlintSparkMaterializedViewIntegrationsITSuite.scala
index 9333d1034..1c9e3a867 100644
--- a/integ-test/src/integration/scala/org/opensearch/flint/spark/FlintSparkMaterializedViewIntegrationsITSuite.scala
+++ b/integ-test/src/integration/scala/org/opensearch/flint/spark/FlintSparkMaterializedViewIntegrationsITSuite.scala
@@ -7,6 +7,8 @@ package org.opensearch.flint.spark
 
 import java.io.File
 import java.sql.Timestamp
+import java.time.ZonedDateTime
+import java.time.format.DateTimeFormatter
 
 import org.opensearch.flint.spark.mv.FlintSparkMaterializedView.getFlintIndexName
 import org.scalatest.matchers.should.Matchers
@@ -52,7 +54,7 @@ class FlintSparkMaterializedViewIntegrationsITSuite extends FlintSparkSuite with
              |""".stripMargin)
         .assertIndexData(
           Row(
-            Timestamp.valueOf("2021-06-01 05:00:00"),
+            timestampFromUTC("2023-11-01T05:00:00Z"),
             "ACCEPT",
             "10.0.0.1",
             "10.0.0.2",
@@ -61,7 +63,7 @@ class FlintSparkMaterializedViewIntegrationsITSuite extends FlintSparkSuite with
             350.0,
             15),
           Row(
-            Timestamp.valueOf("2021-06-01 05:10:00"),
+            timestampFromUTC("2023-11-01T05:10:00Z"),
             "ACCEPT",
             "10.0.0.3",
             "10.0.0.4",
@@ -70,7 +72,7 @@ class FlintSparkMaterializedViewIntegrationsITSuite extends FlintSparkSuite with
             300.0,
             15),
           Row(
-            Timestamp.valueOf("2021-06-01 05:10:00"),
+            timestampFromUTC("2023-11-01T05:10:00Z"),
             "REJECT",
             "10.0.0.5",
             "10.0.0.6",
@@ -129,7 +131,7 @@ class FlintSparkMaterializedViewIntegrationsITSuite extends FlintSparkSuite with
              |  eventCategory
              |""".stripMargin)
         .assertIndexData(Row(
-          Timestamp.valueOf("2023-10-31 22:00:00"),
+          timestampFromUTC("2023-11-01T05:00:00Z"),
           "IAMUser",
           "123456789012",
           "MyRole",
@@ -211,4 +213,9 @@ class FlintSparkMaterializedViewIntegrationsITSuite extends FlintSparkSuite with
       checkAnswer(actualRows, expectedRows)
     }
   }
+
+  private def timestampFromUTC(utcString: String): Timestamp = {
+    val instant = ZonedDateTime.parse(utcString, DateTimeFormatter.ISO_DATE_TIME).toInstant
+    Timestamp.from(instant)
+  }
 }