diff --git a/spring-cloud-gcp-logging/src/main/java/com/google/cloud/spring/logging/StackdriverJsonLayout.java b/spring-cloud-gcp-logging/src/main/java/com/google/cloud/spring/logging/StackdriverJsonLayout.java
index 1ba2cc04f2..ba6f04aea8 100644
--- a/spring-cloud-gcp-logging/src/main/java/com/google/cloud/spring/logging/StackdriverJsonLayout.java
+++ b/spring-cloud-gcp-logging/src/main/java/com/google/cloud/spring/logging/StackdriverJsonLayout.java
@@ -271,9 +271,10 @@ protected Map<String, Object> toJsonMap(ILoggingEvent event) {
       map.put(
           StackdriverTraceConstants.TIMESTAMP_SECONDS_ATTRIBUTE,
           TimeUnit.MILLISECONDS.toSeconds(event.getTimeStamp()));
+      int nanoseconds = event.getNanoseconds();
       map.put(
           StackdriverTraceConstants.TIMESTAMP_NANOS_ATTRIBUTE,
-          TimeUnit.MILLISECONDS.toNanos(event.getTimeStamp() % 1_000));
+          nanoseconds != -1 ? nanoseconds : TimeUnit.MILLISECONDS.toNanos(event.getTimeStamp() % 1_000));
     }
 
     add(
diff --git a/spring-cloud-gcp-logging/src/test/java/com/google/cloud/spring/logging/StackdriverJsonLayoutLoggerTests.java b/spring-cloud-gcp-logging/src/test/java/com/google/cloud/spring/logging/StackdriverJsonLayoutLoggerTests.java
index 625f9b245a..7e06a330bc 100644
--- a/spring-cloud-gcp-logging/src/test/java/com/google/cloud/spring/logging/StackdriverJsonLayoutLoggerTests.java
+++ b/spring-cloud-gcp-logging/src/test/java/com/google/cloud/spring/logging/StackdriverJsonLayoutLoggerTests.java
@@ -246,6 +246,23 @@ void testJsonSeverityLevelMapping() {
         .containsExactly("DEBUG", "DEBUG", "INFO", "WARNING", "ERROR", "ERROR");
   }
 
+  @Test
+  void testTimestampNanos() {
+    LOGGER.warn("test1");
+    LOGGER.warn("test2");
+
+    List<String> jsonLogRecords = Arrays.asList(new String(logOutput.toByteArray()).split("\n"));
+
+    List<Double> logTimestampNanos =
+        jsonLogRecords.stream()
+            .map(record -> GSON.fromJson(record, Map.class))
+            .map(data -> (Double) data.get(StackdriverTraceConstants.TIMESTAMP_NANOS_ATTRIBUTE))
+            .collect(Collectors.toList());
+
+    assertThat(logTimestampNanos).hasSize(2);
+    assertThat(logTimestampNanos).anySatisfy(nanos -> assertThat(nanos % 1000000).isPositive());
+  }
+
   @Test
   void testJsonLayoutEnhancer_missing() {
     LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();