--- a/mobile/android/base/java/org/mozilla/gecko/telemetry/pingbuilders/TelemetrySyncPingBuilder.java
+++ b/mobile/android/base/java/org/mozilla/gecko/telemetry/pingbuilders/TelemetrySyncPingBuilder.java
@@ -22,18 +22,16 @@ import java.util.ArrayList;
 import java.util.HashMap;
 
 /**
  * Local ping builder which understands how to process sync data.
  * Whenever hashing of data is involved, we expect it to be performed at the time of collection,
  * somewhere in {@link org.mozilla.gecko.sync.telemetry.TelemetryCollector} and friends.
  */
 public class TelemetrySyncPingBuilder extends TelemetryLocalPingBuilder {
-    private static final int DATA_FORMAT_VERSION = 1;
-
     public TelemetrySyncPingBuilder setStages(@NonNull final Serializable data) {
         HashMap<String, TelemetryStageCollector> stages = castSyncData(data);
 
         final JSONArray engines = new JSONArray();
         for (String stageName : stages.keySet()) {
             final TelemetryStageCollector stage = stages.get(stageName);
 
             // Skip stages that did nothing.
@@ -138,17 +136,16 @@ public class TelemetrySyncPingBuilder ex
 
     public TelemetrySyncPingBuilder setTook(long took) {
         payload.put("took", took);
         return this;
     }
 
     @Override
     public TelemetryLocalPing build() {
-        payload.put("version", DATA_FORMAT_VERSION);
         return new TelemetryLocalPing(payload, docID);
     }
 
     @SuppressWarnings("unchecked")
     private static void addUnchecked(final JSONArray list, final ExtendedJSONObject obj) {
         list.add(obj);
     }
 

--- a/mobile/android/base/java/org/mozilla/gecko/telemetry/pingbuilders/TelemetrySyncPingBundleBuilder.java
+++ b/mobile/android/base/java/org/mozilla/gecko/telemetry/pingbuilders/TelemetrySyncPingBundleBuilder.java
@@ -34,17 +34,18 @@ import java.util.TimeZone;
  * Sample result will look something like:
  * {
  *     "syncs": [list of syncs, as produced by the SyncBuilder],
  *     "events": [list of events, as produced by the EventBuilder]
  * }
  */
 public class TelemetrySyncPingBundleBuilder extends TelemetryPingBuilder {
     private static final String PING_TYPE = "sync";
-    private static final int PING_VERSION = 4;
+    private static final int PING_BUNDLE_VERSION = 5; // Bug 1374758
+    private static final int PING_SYNC_DATA_FORMAT_VERSION = 1; // Bug 1374758
 
     public static final String UPLOAD_REASON_FIRST = "first";
     public static final String UPLOAD_REASON_CLOCK_DRIFT = "clockdrift";
     public static final String UPLOAD_REASON_SCHEDULE = "schedule";
     public static final String UPLOAD_REASON_IDCHANGE = "idchange";
     public static final String UPLOAD_REASON_COUNT = "count";
 
     private final ExtendedJSONObject pingData = new ExtendedJSONObject();
@@ -66,32 +67,35 @@ public class TelemetrySyncPingBundleBuil
 
     @Override
     public TelemetryOutgoingPing build() {
         final DateFormat pingCreationDateFormat = new SimpleDateFormat(
                 "yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US);
         pingCreationDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
 
         payload.put("type", PING_TYPE);
-        payload.put("version", PING_VERSION);
+        payload.put("version", PING_BUNDLE_VERSION);
         payload.put("id", docID);
         payload.put("creationDate", pingCreationDateFormat.format(new Date()));
 
         final ExtendedJSONObject application = new ExtendedJSONObject();
         application.put("architecture", Build.CPU_ABI);
         application.put("buildID", AppConstants.MOZ_APP_BUILDID);
         application.put("platformVersion", AppConstants.MOZ_APP_VERSION);
         application.put("name", AppConstants.MOZ_APP_BASENAME);
         application.put("version", AppConstants.MOZ_APP_VERSION);
         application.put("displayVersion", AppConstants.MOZ_APP_VERSION);
         application.put("vendor", AppConstants.MOZ_APP_VENDOR);
         application.put("xpcomAbi", AppConstants.MOZ_APP_ABI);
         application.put("channel", AppConstants.MOZ_UPDATE_CHANNEL);
 
         payload.put("application", application);
+
+        pingData.put("version", PING_SYNC_DATA_FORMAT_VERSION);
+
         payload.put("payload", pingData);
         return super.build();
     }
 
     @SuppressWarnings("unchecked")
     public TelemetrySyncPingBundleBuilder setSyncStore(TelemetryPingStore store) {
         final JSONArray syncs = new JSONArray();
         List<TelemetryPing> pings = store.getAllPings();