diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc8fa8c69f..8ac127122c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## Unreleased
+
+### Dependencies
+
+- Bump Android SDK from v6.12.1 to v6.13.0 ([#2790](https://github.com/getsentry/sentry-react-native/pull/2790))
+  - [changelog](https://github.com/getsentry/sentry-java/blob/main/CHANGELOG.md#6130)
+  - [diff](https://github.com/getsentry/sentry-java/compare/6.12.1...6.13.0)
+
 ## 4.14.0
 
 ### Features
diff --git a/android/build.gradle b/android/build.gradle
index 0066e1b751..abf52e6b8f 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -24,5 +24,5 @@ android {
 
 dependencies {
     implementation 'com.facebook.react:react-native:+'
-    api 'io.sentry:sentry-android:6.12.1'
+    api 'io.sentry:sentry-android:6.13.0'
 }
diff --git a/android/src/main/java/io/sentry/react/RNSentryModule.java b/android/src/main/java/io/sentry/react/RNSentryModule.java
index 7ef0127115..168d857942 100644
--- a/android/src/main/java/io/sentry/react/RNSentryModule.java
+++ b/android/src/main/java/io/sentry/react/RNSentryModule.java
@@ -32,7 +32,6 @@
 import java.io.FileOutputStream;
 import java.io.InputStream;
 import java.nio.charset.Charset;
-import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -41,10 +40,12 @@
 import java.util.concurrent.TimeUnit;
 
 import io.sentry.Breadcrumb;
+import io.sentry.DateUtils;
 import io.sentry.HubAdapter;
 import io.sentry.ILogger;
 import io.sentry.Integration;
 import io.sentry.Sentry;
+import io.sentry.SentryDate;
 import io.sentry.SentryEvent;
 import io.sentry.SentryLevel;
 import io.sentry.UncaughtExceptionHandlerIntegration;
@@ -234,7 +235,7 @@ public void fetchNativeRelease(Promise promise) {
     @ReactMethod
     public void fetchNativeAppStart(Promise promise) {
         final AppStartState appStartInstance = AppStartState.getInstance();
-        final Date appStartTime = appStartInstance.getAppStartTime();
+        final SentryDate appStartTime = appStartInstance.getAppStartTime();
         final Boolean isColdStart = appStartInstance.isColdStart();
 
         if (appStartTime == null) {
@@ -244,11 +245,11 @@ public void fetchNativeAppStart(Promise promise) {
             logger.log(SentryLevel.WARNING, "App start won't be sent due to missing isColdStart.");
             promise.resolve(null);
         } else {
-            final double appStartTimestamp = (double) appStartTime.getTime();
+            final double appStartTimestampMs = DateUtils.nanosToMillis(appStartTime.nanoTimestamp());
 
             WritableMap appStart = Arguments.createMap();
 
-            appStart.putDouble("appStartTime", appStartTimestamp);
+            appStart.putDouble("appStartTime", appStartTimestampMs);
             appStart.putBoolean("isColdStart", isColdStart);
             appStart.putBoolean("didFetchAppStart", didFetchAppStart);