diff --git a/build/source_list.bzl b/build/source_list.bzl
index a37c510..e539204 100644
--- a/build/source_list.bzl
+++ b/build/source_list.bzl
@@ -1568,6 +1568,7 @@
     "blind_sign_auth/anonymous_tokens/cpp/crypto/verifier.h",
     "blind_sign_auth/anonymous_tokens/cpp/shared/proto_utils.h",
     "blind_sign_auth/anonymous_tokens/cpp/shared/status_utils.h",
+    "blind_sign_auth/anonymous_tokens/cpp/testing/proto_utils.h",
     "blind_sign_auth/anonymous_tokens/cpp/testing/utils.h",
     "blind_sign_auth/blind_sign_auth.h",
     "blind_sign_auth/blind_sign_auth_interface.h",
@@ -1584,6 +1585,7 @@
     "blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_blinder.cc",
     "blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_ssa_pss_verifier.cc",
     "blind_sign_auth/anonymous_tokens/cpp/shared/proto_utils.cc",
+    "blind_sign_auth/anonymous_tokens/cpp/testing/proto_utils.cc",
     "blind_sign_auth/anonymous_tokens/cpp/testing/utils.cc",
     "blind_sign_auth/blind_sign_auth.cc",
     "blind_sign_auth/cached_blind_sign_auth.cc",
diff --git a/build/source_list.gni b/build/source_list.gni
index 5f25812..2e5c6c2 100644
--- a/build/source_list.gni
+++ b/build/source_list.gni
@@ -1572,6 +1572,7 @@
     "src/quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/verifier.h",
     "src/quiche/blind_sign_auth/anonymous_tokens/cpp/shared/proto_utils.h",
     "src/quiche/blind_sign_auth/anonymous_tokens/cpp/shared/status_utils.h",
+    "src/quiche/blind_sign_auth/anonymous_tokens/cpp/testing/proto_utils.h",
     "src/quiche/blind_sign_auth/anonymous_tokens/cpp/testing/utils.h",
     "src/quiche/blind_sign_auth/blind_sign_auth.h",
     "src/quiche/blind_sign_auth/blind_sign_auth_interface.h",
@@ -1588,6 +1589,7 @@
     "src/quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_blinder.cc",
     "src/quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_ssa_pss_verifier.cc",
     "src/quiche/blind_sign_auth/anonymous_tokens/cpp/shared/proto_utils.cc",
+    "src/quiche/blind_sign_auth/anonymous_tokens/cpp/testing/proto_utils.cc",
     "src/quiche/blind_sign_auth/anonymous_tokens/cpp/testing/utils.cc",
     "src/quiche/blind_sign_auth/blind_sign_auth.cc",
     "src/quiche/blind_sign_auth/cached_blind_sign_auth.cc",
diff --git a/build/source_list.json b/build/source_list.json
index ae24505..f30cdfa 100644
--- a/build/source_list.json
+++ b/build/source_list.json
@@ -1571,6 +1571,7 @@
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/verifier.h",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/shared/proto_utils.h",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/shared/status_utils.h",
+    "quiche/blind_sign_auth/anonymous_tokens/cpp/testing/proto_utils.h",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/testing/utils.h",
     "quiche/blind_sign_auth/blind_sign_auth.h",
     "quiche/blind_sign_auth/blind_sign_auth_interface.h",
@@ -1587,6 +1588,7 @@
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_blinder.cc",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_ssa_pss_verifier.cc",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/shared/proto_utils.cc",
+    "quiche/blind_sign_auth/anonymous_tokens/cpp/testing/proto_utils.cc",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/testing/utils.cc",
     "quiche/blind_sign_auth/blind_sign_auth.cc",
     "quiche/blind_sign_auth/cached_blind_sign_auth.cc"