diff --git a/biometrics/fingerprint/aidl/vts/VtsHalBiometricsFingerprintTargetTest.cpp b/biometrics/fingerprint/aidl/vts/VtsHalBiometricsFingerprintTargetTest.cpp
index 496badc..adb98ac 100644
--- a/biometrics/fingerprint/aidl/vts/VtsHalBiometricsFingerprintTargetTest.cpp
+++ b/biometrics/fingerprint/aidl/vts/VtsHalBiometricsFingerprintTargetTest.cpp
@@ -52,6 +52,14 @@
         return ndk::ScopedAStatus::ok();
     }
 
+    ndk::ScopedAStatus onChallengeGenerated(int64_t /*challenge*/) override {
+        return ndk::ScopedAStatus::ok();
+    }
+
+    ndk::ScopedAStatus onChallengeRevoked(int64_t /*challenge*/) override {
+        return ndk::ScopedAStatus::ok();
+    }
+
     ndk::ScopedAStatus onAcquired(AcquiredInfo /*info*/, int32_t /*vendorCode*/) override {
         return ndk::ScopedAStatus::ok();
     }