diff --git a/appveyor.yml b/appveyor.yml
index 90099f9..63884c9 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -54,24 +54,24 @@ build_script:
   - cd %APPVEYOR_BUILD_FOLDER%
 # install AOM for libavif AV1 decoding support...
   - cd 3rdparty
-  #- git clone -b v3.2.0 --depth 1 https://aomedia.googlesource.com/aom
+  #- git clone -b v3.6.0 --depth 1 https://aomedia.googlesource.com/aom
   #- cd aom
-  #- mkdir build.libavif
-  #- cd build.libavif
+  #- mkdir build.aom
+  #- cd build.aom
   #- cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX% -DENABLE_DOCS=OFF -DBUILD_SHARED_LIBS=ON -DAOM_TARGET_CPU=generic -DENABLE_TESTS=OFF -DENABLE_TESTDATA=OFF -DENABLE_TOOLS=OFF -DENABLE_EXAMPLES=0
   #- cmake --build . --config Release
   #- cmake --build . --config Release --target install/strip
   - mkdir aom
   - cd aom
-  - curl -fsSL -o ppkg-aom.zip https://sourceforge.net/projects/pineapple-package-manager/files/packages/mingw-w64-x86_64-windows/aom-3.2.0-2.zip
+  - curl -fsSL -o ppkg-aom.zip https://sourceforge.net/projects/pineapple-package-manager/files/packages/mingw-w64-x86_64-windows/aom-3.6.0-1.zip
   - ppkg ppkg-aom.zip
   - 7z x ppkg-aom.zip LICENSE -y
   - cd %APPVEYOR_BUILD_FOLDER%
 # install libavif for avif format support of KImageFormats
   - cd %LIBAVIF%
-  - curl -fsSL -o libavif-v0_10_1.zip https://github.com/AOMediaCodec/libavif/archive/v0.10.1.zip
-  - 7z x libavif-v0_10_1.zip -y
-  - cd libavif-0.10.1
+  - curl -fsSL -o libavif-v0_11_1.zip https://github.com/AOMediaCodec/libavif/archive/v0.11.1.zip
+  - 7z x libavif-v0_11_1.zip -y
+  - cd libavif-0.11.1
   - mkdir build
   - cd build
   - cmake .. -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX% -DAVIF_CODEC_AOM=ON
@@ -91,17 +91,17 @@ build_script:
   - cd %APPVEYOR_BUILD_FOLDER%
 # build libexpat for libexiv2
   - cd %LIBEXPAT%
-  - curl -fsSL -o R_2_4_8.zip https://github.com/libexpat/libexpat/archive/R_2_4_8.zip
-  - 7z x R_2_4_8.zip -y
-  - cd libexpat-R_2_4_8/expat/
+  - curl -fsSL -o R_2_5_0.zip https://github.com/libexpat/libexpat/archive/R_2_5_0.zip
+  - 7z x R_2_5_0.zip -y
+  - cd libexpat-R_2_5_0/expat/
   - cmake -G "Ninja" . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX% -DEXPAT_BUILD_EXAMPLES=OFF -DEXPAT_BUILD_TESTS=OFF -DEXPAT_BUILD_TOOLS=OFF
   - cmake --build . --target install/strip
   - cd %APPVEYOR_BUILD_FOLDER%
 # build libexiv2
   - cd %LIBEXIV2%
-  - curl -fsSL -o v0.27.5.zip https://github.com/Exiv2/exiv2/archive/v0.27.5.zip
-  - 7z x v0.27.5.zip -y
-  - cd exiv2-0.27.5
+  - curl -fsSL -o v0.27.6.zip https://github.com/Exiv2/exiv2/archive/v0.27.6.zip
+  - 7z x v0.27.6.zip -y
+  - cd exiv2-0.27.6
   - cmake -G "Ninja" . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=%CMAKE_INSTALL_PREFIX% -DEXIV2_BUILD_SAMPLES=OFF -DEXIV2_ENABLE_WIN_UNICODE=ON
   - cmake --build . --target install/strip
   - cd %APPVEYOR_BUILD_FOLDER%
@@ -126,7 +126,7 @@ build_script:
   - cd bin
   - copy %APPVEYOR_BUILD_FOLDER%\LICENSE .
   - copy %CMAKE_INSTALL_PREFIX%\bin\libaom.dll
-  - copy %CMAKE_INSTALL_PREFIX%\bin\libexpat.dll
+  - copy %CMAKE_INSTALL_PREFIX%\bin\libexpat-1.dll
   - copy %CMAKE_INSTALL_PREFIX%\bin\libexiv2.dll
   - copy %CMAKE_INSTALL_PREFIX%\bin\libavif.dll
   - copy %CMAKE_INSTALL_PREFIX%\bin\libzlib.dll
@@ -138,13 +138,16 @@ build_script:
   - copy %APPVEYOR_BUILD_FOLDER%\3rdparty\aom\LICENSE License.aom.txt
   - copy %APPVEYOR_BUILD_FOLDER%\3rdparty\karchive\LICENSES\LGPL-2.0-or-later.txt License.KArchive.txt
   - copy %APPVEYOR_BUILD_FOLDER%\3rdparty\kimageformats\LICENSES\LGPL-2.1-or-later.txt License.kimageformats.txt
-  - copy %LIBEXPAT%\libexpat-R_2_4_8\expat\COPYING License.expat.txt
-  - copy %LIBAVIF%\libavif-0.10.1\LICENSE License.libavif.txt
-  - copy %LIBEXIV2%\exiv2-0.27.5\COPYING License.exiv2.txt
+  - copy %LIBEXPAT%\libexpat-R_2_5_0\expat\COPYING License.expat.txt
+  - copy %LIBAVIF%\libavif-0.11.1\LICENSE License.libavif.txt
+  - copy %LIBEXIV2%\exiv2-0.27.6\COPYING License.exiv2.txt
 # TODO: Qt, zlib
   - cd ..
 # for debug..
   - tree /f
+  - cd %APPVEYOR_BUILD_FOLDER%
+  - xcopy %CMAKE_INSTALL_PREFIX% .\cmake-prefix-copy /E /H /C /I
 
 artifacts:
   - path: build\bin
+  - path: cmake-prefix-copy