diff --git a/tools/ubsan_suppressions.txt b/tools/ubsan_suppressions.txt
index 83dcfc3d0580dc17568cbb03ebb2d42b101e9e0b..2dcfeea9afae8718c722450858bf300123f06ccf 100644
--- a/tools/ubsan_suppressions.txt
+++ b/tools/ubsan_suppressions.txt
@@ -7,3 +7,4 @@ alignment:CRYPTO_cbc128_encrypt
 alignment:CRYPTO_gcm128_encrypt
 nonnull-attribute:google::protobuf::*
 alignment:google::protobuf::*
+nonnull-attribute:_tr_stored_block