diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e5911b0c..eed88475 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -3,10 +3,10 @@ name: build-workflow
 on:
   push:
     paths-ignore:
-    - 'doc/**'
-    - '**.md'
-    - 'LICENSE'
-    - 'NOTICE'
+      - "doc/**"
+      - "**.md"
+      - "LICENSE"
+      - "NOTICE"
 
 jobs:
   build-windows:
@@ -161,7 +161,7 @@ jobs:
         if: matrix.name == 'ubuntu-20.04_x86_64' || matrix.name == 'ubuntu-22.04_x86_64'
         run: |
           source VERSION
-          # clang-12 と CUDA を入れる
+          # clang-15 と CUDA を入れる
           sudo apt-get update
           sudo apt-get install -y software-properties-common
           # CUDA 10 なので ubuntu1804 で正しい
@@ -169,8 +169,12 @@ jobs:
           sudo mv cuda-ubuntu1804.pin /etc/apt/preferences.d/cuda-repository-pin-600
           sudo apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub
           sudo add-apt-repository "deb https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/ /"
-          sudo apt-get update
-          DEBIAN_FRONTEND=noninteractive sudo apt-get -y install cuda=$CUDA_VERSION clang-12
+          DEBIAN_FRONTEND=noninteractive sudo apt-get -y install cuda=$CUDA_VERSION
+
+          wget https://apt.llvm.org/llvm.sh
+          chmod a+x llvm.sh
+          sudo ./llvm.sh 15
+
           # Intel Media SDK のために libva-dev, libdrm-dev を入れる
           DEBIAN_FRONTEND=noninteractive sudo apt-get -y install libva-dev libdrm-dev
       - name: Install deps for Jetson series
@@ -258,5 +262,4 @@ jobs:
       - name: Release
         uses: softprops/action-gh-release@v1
         with:
-          files:
-            ${{ steps.env.outputs.package_paths }}
+          files: ${{ steps.env.outputs.package_paths }}
diff --git a/CHANGES.md b/CHANGES.md
index f8d56edb..36fb3fef 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -11,12 +11,23 @@
 
 ## develop
 
+## 2023.15.0 (2023-10-31)
+
+- [UPDATE] WebRTC を m119.6045.2.1 に上げる
+  - @voluntas @torikizi @melpon @enm10k
+- [UPDATE] WebRTC を m119 に上げたことで必要になった関連するライブラリもバージョンを上げる
+  - Ubuntu で使用する clang のバージョンを 15 にアップデート
+  - すべてのプラットフォームで set_target_properties の CXX_STANDARD と C_STANDARD を 20 にアップデート
+  - ANDROID_NDK_VERSION を r26b にアップデート
+  - CMAKE_VERSION を 3.27.7 にアップデート
+  - @melpon @enm10k @torikizi
+
 ## 2023.14.0 (2023-10-02)
 
 - [UPDATE] Boost を 1.83.0 に上げる
   - @voluntas
 - [UPDATE] WebRTC を m117.5938.2.0 に上げる
-  - @melpon @miosakuma
+  - @melpon @miosakuma @voluntas
 - [FIX] `MacAudioOutputHelper` でコメントアウトしていた処理をコメントインする
   - 当初 libwebrtc のサンプルにはない処理で、消していた処理を復活させる
   - アプリの起動中に `MacAudioOutputHelper` を作成、削除を繰り返しても問題ないようにする
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9dd7dab9..1f368571 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -80,11 +80,7 @@ set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
 # libsora.a を作る
 
 add_library(sora STATIC)
-if (WIN32)
-  set_target_properties(sora PROPERTIES CXX_STANDARD 20 C_STANDARD 20)
-else()
-  set_target_properties(sora PROPERTIES CXX_STANDARD 17 C_STANDARD 17)
-endif()
+set_target_properties(sora PROPERTIES CXX_STANDARD 20 C_STANDARD 20)
 
 string(SUBSTRING "${SORA_CPP_SDK_COMMIT}" 0 8 SORA_CPP_SDK_COMMIT_SHORT)
 string(SUBSTRING "${WEBRTC_COMMIT}" 0 8 WEBRTC_COMMIT_SHORT)
diff --git a/README.md b/README.md
index dccfaee3..8334a115 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,6 @@ https://github.com/shiguredo/sora-cpp-sdk-samples
 
 **詳細は Discord やメールなどでお気軽にお問い合わせください**
 
-- Raspberry Pi OS 対応
 - Windows arm64 対応
 - AMD 系 HWA 対応
 
diff --git a/VERSION b/VERSION
index 2eb678e8..b782a89c 100644
--- a/VERSION
+++ b/VERSION
@@ -1,12 +1,12 @@
-SORA_CPP_SDK_VERSION=2023.14.0
-WEBRTC_BUILD_VERSION=m117.5938.2.0
+SORA_CPP_SDK_VERSION=2023.15.0
+WEBRTC_BUILD_VERSION=m119.6045.2.1
 BOOST_VERSION=1.83.0
-CMAKE_VERSION=3.26.4
+CMAKE_VERSION=3.27.7
 BAZEL_VERSION=5.3.2
 LYRA_VERSION=1.3.0
 LYRA_COMPATIBLE_VERSION=1.3.0
 CUDA_VERSION=10.2.89-1
-ANDROID_NDK_VERSION=r25b
+ANDROID_NDK_VERSION=r26b
 ANDROID_NATIVE_API_LEVEL=29
 ANDROID_SDK_CMDLINE_TOOLS_VERSION=8092744
 VPL_VERSION=v2023.3.1
diff --git a/run.py b/run.py
index 06b5c294..1b23e4cb 100644
--- a/run.py
+++ b/run.py
@@ -408,10 +408,10 @@ def build_install_webrtc(version, source_dir, build_dir, install_dir, platform,
 
     # インクルードディレクトリを増やしたくないので、
     # __config_site を libc++ のディレクトリにコピーしておく
-    libcxx_dir = os.path.join(source_dir, 'webrtc', 'src', 'buildtools', 'third_party', 'libc++')
-    if not os.path.exists(os.path.join(libcxx_dir, 'trunk', 'include', '__config_site')):
+    libcxx_dir = os.path.join(source_dir, 'webrtc', 'src', 'third_party', 'libc++')
+    if not os.path.exists(os.path.join(libcxx_dir, 'src', 'include', '__config_site')):
         shutil.copyfile(os.path.join(libcxx_dir, '__config_site'),
-                        os.path.join(libcxx_dir, 'trunk', 'include', '__config_site'))
+                        os.path.join(libcxx_dir, 'src', 'include', '__config_site'))
 
 
 class WebrtcInfo(NamedTuple):
@@ -434,7 +434,7 @@ def get_webrtc_info(webrtcbuild: bool, source_dir: str, build_dir: str, install_
             webrtc_library_dir=os.path.join(webrtc_build_dir, 'obj')
             if platform.system() == 'Windows' else webrtc_build_dir, clang_dir=os.path.join(
                 webrtc_source_dir, 'src', 'third_party', 'llvm-build', 'Release+Asserts'),
-            libcxx_dir=os.path.join(webrtc_source_dir, 'src', 'buildtools', 'third_party', 'libc++', 'trunk'),)
+            libcxx_dir=os.path.join(webrtc_source_dir, 'src', 'third_party', 'libc++', 'src'),)
     else:
         return WebrtcInfo(
             version_file=os.path.join(webrtc_install_dir, 'VERSIONS'),
@@ -1138,8 +1138,8 @@ def install_deps(platform: Platform, source_dir, build_dir, install_dir, debug,
             # LLVM
             tools_url = webrtc_version['WEBRTC_SRC_TOOLS_URL']
             tools_commit = webrtc_version['WEBRTC_SRC_TOOLS_COMMIT']
-            libcxx_url = webrtc_version['WEBRTC_SRC_BUILDTOOLS_THIRD_PARTY_LIBCXX_TRUNK_URL']
-            libcxx_commit = webrtc_version['WEBRTC_SRC_BUILDTOOLS_THIRD_PARTY_LIBCXX_TRUNK_COMMIT']
+            libcxx_url = webrtc_version['WEBRTC_SRC_THIRD_PARTY_LIBCXX_SRC_URL']
+            libcxx_commit = webrtc_version['WEBRTC_SRC_THIRD_PARTY_LIBCXX_SRC_COMMIT']
             buildtools_url = webrtc_version['WEBRTC_SRC_BUILDTOOLS_URL']
             buildtools_commit = webrtc_version['WEBRTC_SRC_BUILDTOOLS_COMMIT']
             install_llvm_args = {
@@ -1353,8 +1353,8 @@ def install_deps(platform: Platform, source_dir, build_dir, install_dir, debug,
                 install_vpl_args['cmake_args'].append(f"-DCMAKE_CXX_FLAGS={' '.join(cxxflags)}")
             if platform.target.os == 'ubuntu':
                 cmake_args = []
-                cmake_args.append("-DCMAKE_C_COMPILER=clang-12")
-                cmake_args.append("-DCMAKE_CXX_COMPILER=clang++-12")
+                cmake_args.append("-DCMAKE_C_COMPILER=clang-15")
+                cmake_args.append("-DCMAKE_CXX_COMPILER=clang++-15")
                 path = cmake_path(os.path.join(webrtc_info.libcxx_dir, 'include'))
                 cmake_args.append(f"-DCMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES={path}")
                 flags = [
@@ -1503,8 +1503,8 @@ def main():
             cmake_args.append(f'-DCMAKE_SYSTEM_VERSION={WINDOWS_SDK_VERSION}')
         if platform.target.os == 'ubuntu':
             if platform.target.package_name in ('ubuntu-20.04_x86_64', 'ubuntu-22.04_x86_64'):
-                cmake_args.append("-DCMAKE_C_COMPILER=clang-12")
-                cmake_args.append("-DCMAKE_CXX_COMPILER=clang++-12")
+                cmake_args.append("-DCMAKE_C_COMPILER=clang-15")
+                cmake_args.append("-DCMAKE_CXX_COMPILER=clang++-15")
             else:
                 cmake_args.append(
                     f"-DCMAKE_C_COMPILER={cmake_path(os.path.join(webrtc_info.clang_dir, 'bin', 'clang'))}")
@@ -1663,8 +1663,8 @@ def main():
                     cmake_args.append(f'-DCMAKE_SYSROOT={sysroot}')
                 if platform.target.os == 'ubuntu':
                     if platform.target.package_name in ('ubuntu-20.04_x86_64', 'ubuntu-22.04_x86_64'):
-                        cmake_args.append("-DCMAKE_C_COMPILER=clang-12")
-                        cmake_args.append("-DCMAKE_CXX_COMPILER=clang++-12")
+                        cmake_args.append("-DCMAKE_C_COMPILER=clang-15")
+                        cmake_args.append("-DCMAKE_CXX_COMPILER=clang++-15")
                     else:
                         cmake_args.append(
                             f"-DCMAKE_C_COMPILER={cmake_path(os.path.join(webrtc_info.clang_dir, 'bin', 'clang'))}")
diff --git a/test/android/app/build.gradle b/test/android/app/build.gradle
index 8cc9f25f..bb98a002 100644
--- a/test/android/app/build.gradle
+++ b/test/android/app/build.gradle
@@ -62,7 +62,7 @@ android {
     externalNativeBuild {
         cmake {
             path file('src/main/cpp/CMakeLists.txt')
-            version '3.26.4'
+            version '3.27.7'
         }
     }
     buildFeatures {
diff --git a/third_party/lyra/toolchain/android/BUILD.tpl b/third_party/lyra/toolchain/android/BUILD.tpl
index e425b7ee..a459ad79 100644
--- a/third_party/lyra/toolchain/android/BUILD.tpl
+++ b/third_party/lyra/toolchain/android/BUILD.tpl
@@ -18,10 +18,10 @@ cc_toolchain_config(
     abi_version = "local",
     abi_libc_version = "local",
     cxx_builtin_include_directories = [
-        '%{android_ndk}/toolchains/llvm/prebuilt/linux-x86_64/lib64/clang/%{clang_version}/include',
+        '%{android_ndk}/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/%{clang_version}/include',
         '%sysroot%/usr/include',
         '%sysroot%/usr/local/include',
-        "%{webrtc_include_dir}/buildtools/third_party/libc++abi/trunk/include",
+        "%{webrtc_include_dir}/third_party/libc++abi/src/include",
         "%{llvm_dir}/libcxx/include",
     ],
     tool_paths = {
@@ -87,7 +87,7 @@ cc_toolchain_config(
     # conly_flags = [],
     cxx_flags = [
         "-isystem%{llvm_dir}/libcxx/include",
-        "-isystem%{webrtc_include_dir}/buildtools/third_party/libc++abi/trunk/include",
+        "-isystem%{webrtc_include_dir}/third_party/libc++abi/src/include",
         "-std=c++17",
         "-nostdinc++",
         "-D_LIBCPP_ABI_NAMESPACE=Cr",
diff --git a/third_party/lyra/toolchain/linux_x86_64/BUILD.tpl b/third_party/lyra/toolchain/linux_x86_64/BUILD.tpl
index 669727ac..56a5aa87 100644
--- a/third_party/lyra/toolchain/linux_x86_64/BUILD.tpl
+++ b/third_party/lyra/toolchain/linux_x86_64/BUILD.tpl
@@ -24,7 +24,7 @@ cc_toolchain_config(
         "/usr/include/x86_64-linux-gnu",
         "/usr/include",
         "%{llvm_dir}/libcxx/include",
-        "%{webrtc_include_dir}/buildtools/third_party/libc++abi/trunk/include",
+        "%{webrtc_include_dir}/third_party/libc++abi/src/include",
     ],
     tool_paths = {
         "ar": "%{llvm_dir}/clang/bin/llvm-ar",
@@ -84,7 +84,7 @@ cc_toolchain_config(
     # conly_flags = [],
     cxx_flags = [
         "-isystem%{llvm_dir}/libcxx/include",
-        "-isystem%{webrtc_include_dir}/buildtools/third_party/libc++abi/trunk/include",
+        "-isystem%{webrtc_include_dir}/third_party/libc++abi/src/include",
         "-std=c++17",
         "-nostdinc++",
         "-D_LIBCPP_ABI_NAMESPACE=Cr",
@@ -145,7 +145,7 @@ cc_toolchain_config(
         "/usr/include/aarch64-linux-gnu",
         "/usr/include",
         "%{llvm_dir}/libcxx/include",
-        "%{webrtc_include_dir}/buildtools/third_party/libc++abi/trunk/include",
+        "%{webrtc_include_dir}/third_party/libc++abi/src/include",
     ],
     tool_paths = {
         "ar": "%{llvm_dir}/clang/bin/llvm-ar",
@@ -207,7 +207,7 @@ cc_toolchain_config(
     # conly_flags = [],
     cxx_flags = [
         "-isystem%{llvm_dir}/libcxx/include",
-        "-isystem%{webrtc_include_dir}/buildtools/third_party/libc++abi/trunk/include",
+        "-isystem%{webrtc_include_dir}/third_party/libc++abi/src/include",
         "-std=c++17",
         "-nostdinc++",
         "-D_LIBCPP_ABI_NAMESPACE=Cr",