diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 92a1ebe..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,67 +0,0 @@
-os: linux
-dist: xenial
-sudo: true
-
-language: cpp
-
-addons:
-  apt:
-    packages: &common_packages
-      - ninja-build
-      - liblzma-dev
-      - libz-dev
-    sources: &common_sources
-      - ubuntu-toolchain-r-test
-
-env:
-  global: GCC_VERSION=7
-
-matrix:
-  include:
-    - env: BUILD_TYPE=Release CC_COMPILER=clang CXX_COMPILER=clang++
-      addons: &clang
-        apt:
-          packages:
-            - *common_packages
-            - clang
-          sources:
-            - *common_sources
-
-    - env: BUILD_TYPE=Debug CC_COMPILER=clang CXX_COMPILER=clang++
-      addons: *clang
-
-    - env: BUILD_TYPE=Release CC_COMPILER=gcc-${GCC_VERSION} CXX_COMPILER=g++-${GCC_VERSION}
-      addons: &gcc
-        apt:
-          packages:
-            - *common_packages
-            - g++-7
-            - gcc-7
-          sources:
-            - *common_sources
-
-    - env: BUILD_TYPE=Debug CC_COMPILER=gcc-${GCC_VERSION} CXX_COMPILER=g++-${GCC_VERSION}
-      addons: *gcc
-
-    - env:
-      install:
-      before_script:
-      script:
-        - travis_retry wget --quiet -O - https://raw.githubusercontent.com/cpplint/cpplint/master/cpplint.py | python - --recursive src examples
-
-install:
-  - mkdir -p deps && cd deps
-  - travis_retry wget --no-check-certificate --quiet -O - https://cmake.org/files/v3.12/cmake-3.12.3-Linux-x86_64.tar.gz | tar --strip-components=1 -xz
-  - export PATH=${TRAVIS_BUILD_DIR}/deps/bin:${PATH}
-  - cd -
-
-before_script:
-  - mkdir -p build && cd build
-  - rm -rf *
-  - cmake .. -GNinja -DLIB_PROTO_MUTATOR_WITH_ASAN=ON -DLIB_PROTO_MUTATOR_DOWNLOAD_PROTOBUF=ON -DCMAKE_C_COMPILER=${CC_COMPILER} -DCMAKE_CXX_COMPILER=${CXX_COMPILER} -DCMAKE_BUILD_TYPE=${BUILD_TYPE} -DCMAKE_INSTALL_PREFIX=/usr
-
-script:
-  - export ASAN_OPTIONS=detect_leaks=0
-  - ninja
-  - ninja check
-  - DESTDIR="/tmp/testing/" ninja install
\ No newline at end of file
diff --git a/METADATA b/METADATA
index 9d1a715..dd47c9a 100644
--- a/METADATA
+++ b/METADATA
@@ -5,11 +5,11 @@
     type: GIT
     value: "https://github.com/google/libprotobuf-mutator"
   }
-  version: "e5869dd9690c3f4dfb842fb90bd07a5a9ee32172"
+  version: "dbe588bfb6922060e557fe5b8ee27d2923000c1a"
   license_type: NOTICE
   last_upgrade_date {
-    year: 2020
-    month: 12
-    day: 2
+    year: 2022
+    month: 10
+    day: 19
   }
 }
diff --git a/README.md b/README.md
index ac3c247..ef78060 100644
--- a/README.md
+++ b/README.md
@@ -118,20 +118,20 @@
 Note: You can add callback for any nested message and you can add multiple callbacks for
 the same message type.
 ```
-DEFINE_PROTO_FUZZER(const MyMessageType& input) {
-  static PostProcessorRegistration reg1 = {
-      [](MyMessageType* message, unsigned int seed) {
-        TweakMyMessage(message, seed);
-      }};
-  static PostProcessorRegistration reg2 = {
-      [](MyMessageType* message, unsigned int seed) {
-        DifferentTweakMyMessage(message, seed);
-      }};
-  static PostProcessorRegistration reg_nested = {
-      [](MyMessageType::Nested* message, unsigned int seed) {
-        TweakMyNestedMessage(message, seed);
-      }};
+static PostProcessorRegistration<MyMessageType> reg1 = {
+    [](MyMessageType* message, unsigned int seed) {
+      TweakMyMessage(message, seed);
+    }};
+static PostProcessorRegistration<MyMessageType> reg2 = {
+    [](MyMessageType* message, unsigned int seed) {
+      DifferentTweakMyMessage(message, seed);
+    }};
+static PostProcessorRegistration<MyMessageType::Nested> reg_nested = {
+    [](MyMessageType::Nested* message, unsigned int seed) {
+      TweakMyNestedMessage(message, seed);
+    }};
 
+DEFINE_PROTO_FUZZER(const MyMessageType& input) {
   // Code which needs to be fuzzed.
   ConsumeMyMessageType(input);
 }
@@ -142,6 +142,14 @@
 applied to "proto2" type libprotobuf-mutator will generate any strings including
 invalid UTF-8. If it's a "proto3" message type, only valid UTF-8 will be used.
 
+## Extensions
+Currently the library does not mutate
+[extensions](https://developers.google.com/protocol-buffers/docs/proto#extensions).
+This can be a problem if extension contains required fields so the library will not
+be able to change the message into valid initialized state.
+You can use [post processing hooks](#mutation-post-processing-experimental) to
+cleanup/initialize the message as workaround.
+
 ## Users of the library
 * [Chromium](https://cs.chromium.org/search/?q=DEFINE_.*._PROTO_FUZZER%5C\()
 * [Envoy](https://github.com/envoyproxy/envoy/search?q=DEFINE_TEXT_PROTO_FUZZER+OR+DEFINE_PROTO_FUZZER+OR+DEFINE_BINARY_PROTO_FUZZER&unscoped_q=DEFINE_TEXT_PROTO_FUZZER+OR+DEFINE_PROTO_FUZZER+OR+DEFINE_BINARY_PROTO_FUZZER&type=Code)
diff --git a/cmake/external/googletest.cmake b/cmake/external/googletest.cmake
index 825ff9a..ad0fe4a 100644
--- a/cmake/external/googletest.cmake
+++ b/cmake/external/googletest.cmake
@@ -44,7 +44,7 @@
 ExternalProject_Add(${GTEST_TARGET}
     PREFIX ${GTEST_TARGET}
     GIT_REPOSITORY https://github.com/google/googletest.git
-    GIT_TAG 3f05f651ae3621db58468153e32016bc1397800b
+    GIT_TAG release-1.12.0
     UPDATE_COMMAND ""
     CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
                      -DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
diff --git a/cmake/external/libxml2.cmake b/cmake/external/libxml2.cmake
index c00ace2..8918ee0 100644
--- a/cmake/external/libxml2.cmake
+++ b/cmake/external/libxml2.cmake
@@ -36,13 +36,11 @@
     GIT_REPOSITORY GIT_REPOSITORY https://gitlab.gnome.org/GNOME/libxml2
     GIT_TAG master
     UPDATE_COMMAND ""
-    CONFIGURE_COMMAND ${LIBXML2_SRC_DIR}/autogen.sh --without-python
-                                                    --prefix=${LIBXML2_INSTALL_DIR}
-                                                    CC=${CMAKE_C_COMPILER}
-                                                    CXX=${CMAKE_CXX_COMPILER}
-                                                    CFLAGS=${LIBXML2_CFLAGS}
-                                                    CXXFLAGS=${LIBXML2_CXXFLAGS}
-    BUILD_COMMAND make -j ${CPU_COUNT} all
-    INSTALL_COMMAND make install
+    CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
+                     -DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
+    CMAKE_ARGS -DCMAKE_C_FLAGS=${LIBXML2_CFLAGS} -DCMAKE_CXX_FLAGS=${LIBXML2_CXXFLAGS}
+               -DCMAKE_INSTALL_PREFIX=${LIBXML2_INSTALL_DIR}
+               -DCMAKE_INSTALL_LIBDIR=lib
+               -DBUILD_SHARED_LIBS=OFF
     BUILD_BYPRODUCTS ${LIBXML2_BUILD_BYPRODUCTS}
 )
diff --git a/cmake/external/protobuf.cmake b/cmake/external/protobuf.cmake
index 0b64519..3dc930c 100644
--- a/cmake/external/protobuf.cmake
+++ b/cmake/external/protobuf.cmake
@@ -63,7 +63,7 @@
 ExternalProject_Add(${PROTOBUF_TARGET}
     PREFIX ${PROTOBUF_TARGET}
     GIT_REPOSITORY https://github.com/google/protobuf.git
-    GIT_TAG 214c77e1b76e63e512bd675d1c300c80438642b6
+    GIT_TAG v21.7
     UPDATE_COMMAND ""
     CONFIGURE_COMMAND ${CMAKE_COMMAND} ${PROTOBUF_INSTALL_DIR}/src/${PROTOBUF_TARGET}/cmake
         -G${CMAKE_GENERATOR}
diff --git a/examples/libfuzzer/libfuzzer_bin_example.cc b/examples/libfuzzer/libfuzzer_bin_example.cc
index 963b522..246f279 100644
--- a/examples/libfuzzer/libfuzzer_bin_example.cc
+++ b/examples/libfuzzer/libfuzzer_bin_example.cc
@@ -21,26 +21,29 @@
 
 protobuf_mutator::protobuf::LogSilencer log_silincer;
 
-protobuf_mutator::libfuzzer::PostProcessorRegistration<libfuzzer_example::Msg>
-    reg = {[](libfuzzer_example::Msg* message, unsigned int seed) {
+template <class Proto>
+using PostProcessor =
+    protobuf_mutator::libfuzzer::PostProcessorRegistration<Proto>;
+
+static PostProcessor<libfuzzer_example::Msg> reg1 = {
+    [](libfuzzer_example::Msg* message, unsigned int seed) {
       message->set_optional_uint64(
           std::hash<std::string>{}(message->optional_string()));
+    }};
 
-      if (message->has_any()) {
-        auto* any = message->mutable_any();
+static PostProcessor<google::protobuf::Any> reg2 = {
+    [](google::protobuf::Any* any, unsigned int seed) {
+      // Guide mutator to usefull 'Any' types.
+      static const char* const expected_types[] = {
+          "type.googleapis.com/google.protobuf.DescriptorProto",
+          "type.googleapis.com/google.protobuf.FileDescriptorProto",
+      };
 
-        // Guide mutator to usefull 'Any' types.
-        static const char* const expected_types[] = {
-            "type.googleapis.com/google.protobuf.DescriptorProto",
-            "type.googleapis.com/google.protobuf.FileDescriptorProto",
-        };
-
-        if (!std::count(std::begin(expected_types), std::end(expected_types),
-                        any->type_url())) {
-          const size_t num =
-              (std::end(expected_types) - std::begin(expected_types));
-          any->set_type_url(expected_types[seed % num]);
-        }
+      if (!std::count(std::begin(expected_types), std::end(expected_types),
+                      any->type_url())) {
+        const size_t num =
+            (std::end(expected_types) - std::begin(expected_types));
+        any->set_type_url(expected_types[seed % num]);
       }
     }};
 
diff --git a/examples/libfuzzer/libfuzzer_example.cc b/examples/libfuzzer/libfuzzer_example.cc
index aa65125..a852e98 100644
--- a/examples/libfuzzer/libfuzzer_example.cc
+++ b/examples/libfuzzer/libfuzzer_example.cc
@@ -21,26 +21,29 @@
 
 protobuf_mutator::protobuf::LogSilencer log_silincer;
 
-protobuf_mutator::libfuzzer::PostProcessorRegistration<libfuzzer_example::Msg>
-    reg = {[](libfuzzer_example::Msg* message, unsigned int seed) {
+template <class Proto>
+using PostProcessor =
+    protobuf_mutator::libfuzzer::PostProcessorRegistration<Proto>;
+
+static PostProcessor<libfuzzer_example::Msg> reg1 = {
+    [](libfuzzer_example::Msg* message, unsigned int seed) {
       message->set_optional_uint64(
           std::hash<std::string>{}(message->optional_string()));
+    }};
 
-      if (message->has_any()) {
-        auto* any = message->mutable_any();
+static PostProcessor<google::protobuf::Any> reg2 = {
+    [](google::protobuf::Any* any, unsigned int seed) {
+      // Guide mutator to usefull 'Any' types.
+      static const char* const expected_types[] = {
+          "type.googleapis.com/google.protobuf.DescriptorProto",
+          "type.googleapis.com/google.protobuf.FileDescriptorProto",
+      };
 
-        // Guide mutator to usefull 'Any' types.
-        static const char* const expected_types[] = {
-            "type.googleapis.com/google.protobuf.DescriptorProto",
-            "type.googleapis.com/google.protobuf.FileDescriptorProto",
-        };
-
-        if (!std::count(std::begin(expected_types), std::end(expected_types),
-                        any->type_url())) {
-          const size_t num =
-              (std::end(expected_types) - std::begin(expected_types));
-          any->set_type_url(expected_types[seed % num]);
-        }
+      if (!std::count(std::begin(expected_types), std::end(expected_types),
+                      any->type_url())) {
+        const size_t num =
+            (std::end(expected_types) - std::begin(expected_types));
+        any->set_type_url(expected_types[seed % num]);
       }
     }};
 
diff --git a/src/binary_format.cc b/src/binary_format.cc
index 2e9a8c7..3455788 100644
--- a/src/binary_format.cc
+++ b/src/binary_format.cc
@@ -19,7 +19,8 @@
 using protobuf::Message;
 
 bool ParseBinaryMessage(const uint8_t* data, size_t size, Message* output) {
-  return ParseBinaryMessage({data, data + size}, output);
+  return ParseBinaryMessage({reinterpret_cast<const char*>(data), size},
+                            output);
 }
 
 bool ParseBinaryMessage(const std::string& data, protobuf::Message* output) {
diff --git a/src/libfuzzer/libfuzzer_macro.h b/src/libfuzzer/libfuzzer_macro.h
index 1a1fe0a..b5cb201 100644
--- a/src/libfuzzer/libfuzzer_macro.h
+++ b/src/libfuzzer/libfuzzer_macro.h
@@ -82,14 +82,15 @@
   using PostProcessorRegistration =                    \
       protobuf_mutator::libfuzzer::PostProcessorRegistration<Proto>;
 
-#define DEFINE_PROTO_FUZZER_IMPL(use_binary, arg)                              \
-  static void TestOneProtoInput(arg);                                          \
-  using FuzzerProtoType = std::remove_const<std::remove_reference<             \
-      std::function<decltype(TestOneProtoInput)>::argument_type>::type>::type; \
-  DEFINE_CUSTOM_PROTO_MUTATOR_IMPL(use_binary, FuzzerProtoType)                \
-  DEFINE_CUSTOM_PROTO_CROSSOVER_IMPL(use_binary, FuzzerProtoType)              \
-  DEFINE_TEST_ONE_PROTO_INPUT_IMPL(use_binary, FuzzerProtoType)                \
-  DEFINE_POST_PROCESS_PROTO_MUTATION_IMPL(FuzzerProtoType)                     \
+#define DEFINE_PROTO_FUZZER_IMPL(use_binary, arg)                 \
+  static void TestOneProtoInput(arg);                             \
+  using FuzzerProtoType =                                         \
+      protobuf_mutator::libfuzzer::macro_internal::GetFirstParam< \
+          decltype(&TestOneProtoInput)>::type;                    \
+  DEFINE_CUSTOM_PROTO_MUTATOR_IMPL(use_binary, FuzzerProtoType)   \
+  DEFINE_CUSTOM_PROTO_CROSSOVER_IMPL(use_binary, FuzzerProtoType) \
+  DEFINE_TEST_ONE_PROTO_INPUT_IMPL(use_binary, FuzzerProtoType)   \
+  DEFINE_POST_PROCESS_PROTO_MUTATION_IMPL(FuzzerProtoType)        \
   static void TestOneProtoInput(arg)
 
 namespace protobuf_mutator {
@@ -123,6 +124,19 @@
   }
 };
 
+namespace macro_internal {
+
+template <typename T>
+struct GetFirstParam;
+
+template <class Arg>
+struct GetFirstParam<void (*)(Arg)> {
+  using type = typename std::remove_const<
+      typename std::remove_reference<Arg>::type>::type;
+};
+
+}  // namespace macro_internal
+
 }  // namespace libfuzzer
 }  // namespace protobuf_mutator
 
diff --git a/src/text_format.cc b/src/text_format.cc
index 4479229..39b2fdb 100644
--- a/src/text_format.cc
+++ b/src/text_format.cc
@@ -22,7 +22,7 @@
 using protobuf::TextFormat;
 
 bool ParseTextMessage(const uint8_t* data, size_t size, Message* output) {
-  return ParseTextMessage({data, data + size}, output);
+  return ParseTextMessage({reinterpret_cast<const char*>(data), size}, output);
 }
 
 bool ParseTextMessage(const std::string& data, protobuf::Message* output) {