diff --git a/services/core/java/com/android/server/am/AppBatteryTracker.java b/services/core/java/com/android/server/am/AppBatteryTracker.java
index 1a566a9e2bc5f..6619025793173 100644
--- a/services/core/java/com/android/server/am/AppBatteryTracker.java
+++ b/services/core/java/com/android/server/am/AppBatteryTracker.java
@@ -839,6 +839,8 @@ final class AppBatteryTracker extends BaseAppStateTracker<AppBatteryPolicy>
 
     @Override
     void dumpAsProto(ProtoOutputStream proto, int uid) {
+        // Force an update.
+        updateBatteryUsageStatsIfNecessary(mInjector.currentTimeMillis(), true);
         synchronized (mLock) {
             final SparseArray<ImmutableBatteryUsage> uidConsumers = mUidBatteryUsageInWindow;
             if (uid != android.os.Process.INVALID_UID) {