diff --git a/.appveyor.yml b/.appveyor.yml
index 6876a51..161bd8b 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -7,7 +7,7 @@ image:
   - Visual Studio 2022
 
 environment:
-  VCPKGDIR: C:\tools\vcpkg\installed\x64-windows-static-md
+  VCPKGDIR: C:\tools\vcpkg\installed\x64-windows-static-md-release
   matrix:
   - QTDIR: C:\Qt\5.15\msvc2019_64
   - QTDIR: C:\Qt\6.8\msvc2022_64
@@ -16,8 +16,8 @@ install:
 - cmd: |-
     set PATH=%QTDIR%\bin;%VCPKGDIR%\tools\protobuf;%PATH%
     call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat
-    vcpkg install protobuf:x64-windows-static-md
-    vcpkg install zlib:x64-windows-static-md
+    vcpkg install protobuf:x64-windows-static-md-release
+    vcpkg install zlib:x64-windows-static-md-release
     copy /y %VCPKGDIR%\lib\zlib.lib %VCPKGDIR%\lib\zlibstatic.lib
 
 build_script: