diff --git a/contexthub/aidl/default/include/contexthub-impl/ContextHub.h b/contexthub/aidl/default/include/contexthub-impl/ContextHub.h
index 03d8432..4aeb948 100644
--- a/contexthub/aidl/default/include/contexthub-impl/ContextHub.h
+++ b/contexthub/aidl/default/include/contexthub-impl/ContextHub.h
@@ -19,6 +19,7 @@
 #include <aidl/android/hardware/contexthub/BnContextHub.h>
 
 #include <unordered_set>
+#include <vector>
 
 namespace aidl {
 namespace android {
@@ -37,6 +38,8 @@
                                        int32_t in_transactionId) override;
     ::ndk::ScopedAStatus onSettingChanged(Setting in_setting, bool in_enabled) override;
     ::ndk::ScopedAStatus queryNanoapps(int32_t in_contextHubId) override;
+    ::ndk::ScopedAStatus getPreloadedNanoappIds(
+            std::vector<int64_t>* out_preloadedNanoappIds) override;
     ::ndk::ScopedAStatus registerCallback(
             int32_t in_contextHubId, const std::shared_ptr<IContextHubCallback>& in_cb) override;
     ::ndk::ScopedAStatus sendMessageToHub(int32_t in_contextHubId,