diff --git a/keystore/Android.bp b/keystore/Android.bp
index 295d605..366f591 100644
--- a/keystore/Android.bp
+++ b/keystore/Android.bp
@@ -234,6 +234,7 @@
     srcs: [
         ":IKeyAttestationApplicationIdProvider.aidl",
         "auth_token_table.cpp",
+        "blob.cpp",
         "keystore_attestation_id.cpp",
         "KeyAttestationApplicationId.cpp",
         "KeyAttestationPackageInfo.cpp",