diff --git a/tools/ubsan_suppressions.txt b/tools/ubsan_suppressions.txt
index 9869f98a22e6507e64bc0bd927f782290d064edb..f87ed1856543561e5654fec9e718a57fbd4648f0 100644
--- a/tools/ubsan_suppressions.txt
+++ b/tools/ubsan_suppressions.txt
@@ -4,4 +4,6 @@ nonnull-attribute:CBB_add_bytes
 nonnull-attribute:rsa_blinding_get
 nonnull-attribute:ssl_copy_key_material
 alignment:CRYPTO_cbc128_encrypt
+nonnull-attribute:google::protobuf::DescriptorBuilder::BuildFileImpl
+nonnull-attribute:google::protobuf::TextFormat::Printer::TextGenerator::Write