diff --git a/devel/protobuf/Makefile b/devel/protobuf/Makefile
--- a/devel/protobuf/Makefile
+++ b/devel/protobuf/Makefile
@@ -1,5 +1,5 @@
 PORTNAME=	protobuf
-PORTVERSION=	28.3
+PORTVERSION=	29.3
 PORTEPOCH=	1
 CATEGORIES=	devel
 MASTER_SITES=	https://github.com/protocolbuffers/protobuf/releases/download/v${PORTVERSION}/
diff --git a/devel/protobuf/distinfo b/devel/protobuf/distinfo
--- a/devel/protobuf/distinfo
+++ b/devel/protobuf/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1729994284
-SHA256 (protobuf-28.3.tar.gz) = 7c3ebd7aaedd86fa5dc479a0fda803f602caaf78d8aff7ce83b89e1b8ae7442a
-SIZE (protobuf-28.3.tar.gz) = 9256608
+TIMESTAMP = 1737632070
+SHA256 (protobuf-29.3.tar.gz) = 008a11cc56f9b96679b4c285fd05f46d317d685be3ab524b2a310be0fbad987e
+SIZE (protobuf-29.3.tar.gz) = 9348951
diff --git a/devel/protobuf/pkg-plist b/devel/protobuf/pkg-plist
--- a/devel/protobuf/pkg-plist
+++ b/devel/protobuf/pkg-plist
@@ -18,6 +18,7 @@
 include/google/protobuf/arenastring.h
 include/google/protobuf/arenaz_sampler.h
 include/google/protobuf/compiler/code_generator.h
+include/google/protobuf/compiler/code_generator_lite.h
 include/google/protobuf/compiler/command_line_interface.h
 include/google/protobuf/compiler/cpp/enum.h
 include/google/protobuf/compiler/cpp/extension.h
@@ -78,7 +79,6 @@
 include/google/protobuf/compiler/java/helpers.h
 include/google/protobuf/compiler/java/internal_helpers.h
 include/google/protobuf/compiler/java/java_features.pb.h
-include/google/protobuf/compiler/java/kotlin_generator.h
 include/google/protobuf/compiler/java/lite/enum.h
 include/google/protobuf/compiler/java/lite/enum_field.h
 include/google/protobuf/compiler/java/lite/extension.h
@@ -96,6 +96,9 @@
 include/google/protobuf/compiler/java/names.h
 include/google/protobuf/compiler/java/options.h
 include/google/protobuf/compiler/java/shared_code_generator.h
+include/google/protobuf/compiler/kotlin/file.h
+include/google/protobuf/compiler/kotlin/generator.h
+include/google/protobuf/compiler/kotlin/message.h
 include/google/protobuf/compiler/objectivec/enum.h
 include/google/protobuf/compiler/objectivec/enum_field.h
 include/google/protobuf/compiler/objectivec/extension.h
@@ -125,10 +128,12 @@
 include/google/protobuf/compiler/python/pyi_generator.h
 include/google/protobuf/compiler/retention.h
 include/google/protobuf/compiler/ruby/ruby_generator.h
+include/google/protobuf/compiler/rust/upb_helpers.h
 include/google/protobuf/compiler/rust/accessors/accessor_case.h
 include/google/protobuf/compiler/rust/accessors/accessors.h
 include/google/protobuf/compiler/rust/accessors/default_value.h
 include/google/protobuf/compiler/rust/accessors/generator.h
+include/google/protobuf/compiler/rust/accessors/with_presence.h
 include/google/protobuf/compiler/rust/context.h
 include/google/protobuf/compiler/rust/crate_mapping.h
 include/google/protobuf/compiler/rust/enum.h
@@ -176,6 +181,7 @@
 include/google/protobuf/generated_message_tctable_gen.h
 include/google/protobuf/generated_message_tctable_impl.h
 include/google/protobuf/generated_message_util.h
+include/google/protobuf/go_features.proto
 include/google/protobuf/has_bits.h
 include/google/protobuf/implicit_weak_message.h
 include/google/protobuf/inlined_string_field.h
@@ -190,6 +196,7 @@
 include/google/protobuf/io/zero_copy_stream.h
 include/google/protobuf/io/zero_copy_stream_impl.h
 include/google/protobuf/io/zero_copy_stream_impl_lite.h
+include/google/protobuf/java_features.proto
 include/google/protobuf/json/internal/descriptor_traits.h
 include/google/protobuf/json/internal/lexer.h
 include/google/protobuf/json/internal/message_path.h
@@ -258,7 +265,6 @@
 include/google/protobuf/wire_format_lite.h
 include/google/protobuf/wrappers.pb.h
 include/google/protobuf/wrappers.proto
-include/java/core/src/main/resources/google/protobuf/java_features.proto
 include/upb/base/descriptor_constants.h
 include/upb/base/internal/endian.h
 include/upb/base/internal/log2.h
@@ -334,6 +340,7 @@
 include/upb/reflection/def.hpp
 include/upb/reflection/def_pool.h
 include/upb/reflection/def_type.h
+include/upb/reflection/descriptor_bootstrap.h
 include/upb/reflection/enum_def.h
 include/upb/reflection/enum_reserved_range.h
 include/upb/reflection/enum_value_def.h
@@ -366,13 +373,16 @@
 include/upb/text/options.h
 include/upb/util/def_to_proto.h
 include/upb/util/required_fields.h
+include/upb/wire/byte_size.h
 include/upb/wire/decode.h
 include/upb/wire/encode.h
 include/upb/wire/eps_copy_input_stream.h
 include/upb/wire/internal/decode_fast.h
 include/upb/wire/reader.h
 include/upb/wire/types.h
-include/upb_generator/mangle.h
+include/upb_generator/common/names.h
+include/upb_generator/minitable/names.h
+include/upb_generator/minitable/names_internal.h
 include/utf8_range.h
 include/utf8_validity.h
 lib/cmake/protobuf/protobuf-config-version.cmake
@@ -396,4 +406,5 @@
 lib/libutf8_validity.so
 libdata/pkgconfig/protobuf-lite.pc
 libdata/pkgconfig/protobuf.pc
+libdata/pkgconfig/upb.pc
 libdata/pkgconfig/utf8_range.pc