--- a/src/google/protobuf/arena.h	(index)
+++ b/src/google/protobuf/arena.h	(working tree)
@@ -242,1 +242,1 @@ struct ArenaOptions {
-class PROTOBUF_EXPORT PROTOBUF_ALIGNAS(8) Arena final {
+class PROTOBUF_EXPORT PROTOBUF_ALIGNAS(8) Arena {
--- a/src/google/protobuf/repeated_field.h	(index)
+++ b/src/google/protobuf/repeated_field.h	(working tree)
@@ -163,1 +163,1 @@ PROTO_MEMSWAP_DEF_SIZE(uint64, (1u << 31))
-class RepeatedField final {
+class RepeatedField {
--- a/src/google/protobuf/repeated_ptr_field.h	(index)
+++ b/src/google/protobuf/repeated_ptr_field.h	(working tree)
@@ -521,1 +521,1 @@ class StringTypeHandler {
-class RepeatedPtrField final : private internal::RepeatedPtrFieldBase {
+class RepeatedPtrField : private internal::RepeatedPtrFieldBase {