diff --git a/.github/workflows/gcc.yml b/.github/workflows/gcc.yml
index b53f092..7cce248 100644
--- a/.github/workflows/gcc.yml
+++ b/.github/workflows/gcc.yml
@@ -31,10 +31,9 @@ jobs:
         git submodule init
         git submodule update
 
-    - name: Install cmake
+    - name: Install opencv
       run: |
         sudo apt-get update
-        sudo apt-get install cmake -y
         sudo apt-get install libopencv-dev
 
     - name: Build
diff --git a/.github/workflows/msbuild.yml b/.github/workflows/msbuild.yml
index 66a9378..84b5015 100755
--- a/.github/workflows/msbuild.yml
+++ b/.github/workflows/msbuild.yml
@@ -30,10 +30,13 @@ jobs:
     - name: Checkout github repo (+ download lfs dependencies)
       uses: actions/checkout@v2
 
-    - name: Install cmake
-      uses: Dovyski/setup-opencv-action@v1.1
+    - name: Install opencv
+      uses: cvpkg/opencv-action@v0.1
       with:
-        opencv-version: '4.0.0'
+        opencv_tag: '4.6.0' # Optional. Default is '4.6.0'. An env var 'opencv_tag' will be defined.
+        BUILD_LIST: 'core,imgcodecs,imgproc' # Optional. Default is 'core,imgcodecs,imgproc'. The opencv modules(libraries, components) to be build, separated with `,` and no spaces.
+        BUILD_SHARED_LIBS: 'OFF' # Optional. Default is 'OFF'. Build shared opencv librarires, should be "ON" or "OFF".
+        BUILD_WITH_STATIC_CRT: 'OFF' # Optional. Default is 'OFF'. Build with static C Runtime Library?(only when MSVC), should be "ON" or "OFF"
     
     - name: Checkout submodule
       run: |
diff --git a/.github/workflows/xcode.yml b/.github/workflows/xcode.yml
index f4cdec0..c28c0a7 100644
--- a/.github/workflows/xcode.yml
+++ b/.github/workflows/xcode.yml
@@ -33,9 +33,8 @@ jobs:
     - name: Show Xcode version
       run: xcodebuild -version
 
-    - name: Install cmake
+    - name: Install opencv
       run: |
-        brew install cmake
         brew install opencv
 
     - name: Build
diff --git a/audio_processing/silero-vad/CMakeLists.txt b/audio_processing/silero-vad/CMakeLists.txt
index 17f341c..08bbe48 100644
--- a/audio_processing/silero-vad/CMakeLists.txt
+++ b/audio_processing/silero-vad/CMakeLists.txt
@@ -12,6 +12,10 @@ link_directories(${LIBRARY_PATH})
 
 add_executable(${PROJECT_NAME} ${SRC_FILES})
 
+if(UNIX AND NOT APPLE)
+	target_link_libraries(${PROJECT_NAME} PRIVATE "-pthread") # for ailia SDK 1.4.0
+endif()
+
 target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_11)
 target_link_libraries(${PROJECT_NAME} ailia)
 set (CMAKE_INSTALL_PREFIX ${CMAKE_SOURCE_DIR})