diff --git a/appveyor.yml b/appveyor.yml
index 0a92a6c9..9ee5d9a3 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -16,6 +16,20 @@ environment:
       LINKER_FLAGS: ""
       GENERATOR: Visual Studio 15 2017
 
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      configuration: Debug
+      platform: x86
+      CXX_FLAGS: ""
+      LINKER_FLAGS: ""
+      GENERATOR: Visual Studio 16 2019
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      configuration: Debug
+      platform: x64
+      CXX_FLAGS: ""
+      LINKER_FLAGS: ""
+      GENERATOR: Visual Studio 16 2019
+
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       configuration: Debug
       COMPILER: mingw
@@ -47,13 +61,6 @@ environment:
       LINKER_FLAGS: ""
       GENERATOR: Visual Studio 14 2015
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      configuration: Release
-      platform: x86
-      CXX_FLAGS: ""
-      LINKER_FLAGS: ""
-      GENERATOR: Visual Studio 15 2017
-
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       configuration: Release
       platform: x86
@@ -61,43 +68,51 @@ environment:
       LINKER_FLAGS: ""
       GENERATOR: Visual Studio 15 2017
 
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      configuration: Release
+      platform: x86
+      CXX_FLAGS: ""
+      LINKER_FLAGS: ""
+      GENERATOR: Visual Studio 16 2019
+
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       configuration: Release
       platform: x64
       CXX_FLAGS: ""
       LINKER_FLAGS: ""
-      GENERATOR: Visual Studio 14 2015 Win64
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      configuration: Release
-      platform: x64
-      CXX_FLAGS: ""
-      LINKER_FLAGS: ""
-      GENERATOR: Visual Studio 15 2017 Win64
+      GENERATOR: Visual Studio 14 2015
 
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       configuration: Release
       platform: x64
       CXX_FLAGS: "/permissive- /std:c++latest /utf-8 /F4000000"
       LINKER_FLAGS: "/STACK:4000000"
-      GENERATOR: Visual Studio 15 2017 Win64
+      GENERATOR: Visual Studio 15 2017
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      configuration: Release
+      platform: x64
+      CXX_FLAGS: ""
+      LINKER_FLAGS: ""
+      GENERATOR: Visual Studio 16 2019
 
 init:
   - cmake --version
   - msbuild /version
 
 install:
-  - if "%COMPILER%"=="mingw" appveyor DownloadFile https://github.com/ninja-build/ninja/releases/download/v1.6.0/ninja-win.zip -FileName ninja.zip
-  - if "%COMPILER%"=="mingw" 7z x ninja.zip -oC:\projects\deps\ninja > nul
-  - if "%COMPILER%"=="mingw" set PATH=C:\projects\deps\ninja;%PATH%
-  - if "%COMPILER%"=="mingw" set PATH=C:\mingw-w64\x86_64-7.3.0-posix-seh-rt_v5-rev0\mingw64\bin;%PATH%
-  - if "%COMPILER%"=="mingw" g++ --version
+  - if "%COMPILER%"=="mingw"  appveyor DownloadFile https://github.com/ninja-build/ninja/releases/download/v1.6.0/ninja-win.zip -FileName ninja.zip
+  - if "%COMPILER%"=="mingw"  7z x ninja.zip -oC:\projects\deps\ninja > nul
+  - if "%COMPILER%"=="mingw"  set PATH=C:\projects\deps\ninja;%PATH%
+  - if "%COMPILER%"=="mingw"  set PATH=C:\mingw-w64\x86_64-7.3.0-posix-seh-rt_v5-rev0\mingw64\bin;%PATH%
+  - if "%COMPILER%"=="mingw"  g++ --version
+  - if "%platform%"=="x86"    set GENERATOR_PLATFORM=Win32
 
 before_build:
   # for with_win_header build, inject the inclusion of Windows.h to the single-header library
   - ps: if ($env:name -Eq "with_win_header") { $header_path = "single_include\nlohmann\json.hpp" }
   - ps: if ($env:name -Eq "with_win_header") { "#include <Windows.h>`n" + (Get-Content $header_path | Out-String) | Set-Content $header_path }
-  - cmake . -G "%GENERATOR%" -DCMAKE_BUILD_TYPE="%configuration%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin"
+  - if "%GENERATOR%"=="Ninja" (cmake . -G "%GENERATOR%" -DCMAKE_BUILD_TYPE="%configuration%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin") else (cmake . -G "%GENERATOR%" -A "%GENERATOR_PLATFORM%" -DCMAKE_CXX_FLAGS="%CXX_FLAGS%" -DCMAKE_EXE_LINKER_FLAGS="%LINKER_FLAGS%" -DCMAKE_IGNORE_PATH="C:/Program Files/Git/usr/bin")
 
 build_script:
   - cmake --build . --config "%configuration%"
diff --git a/test/cmake_import/CMakeLists.txt b/test/cmake_import/CMakeLists.txt
index 911c342c..24d4a33a 100644
--- a/test/cmake_import/CMakeLists.txt
+++ b/test/cmake_import/CMakeLists.txt
@@ -1,6 +1,7 @@
 add_test(NAME cmake_import_configure
   COMMAND ${CMAKE_COMMAND}
     -G "${CMAKE_GENERATOR}"
+    -A "${CMAKE_GENERATOR_PLATFORM}"
     -Dnlohmann_json_DIR=${PROJECT_BINARY_DIR}
     ${CMAKE_CURRENT_SOURCE_DIR}/project
 )
diff --git a/test/cmake_import_minver/CMakeLists.txt b/test/cmake_import_minver/CMakeLists.txt
index 8cef2fab..2efcd85f 100644
--- a/test/cmake_import_minver/CMakeLists.txt
+++ b/test/cmake_import_minver/CMakeLists.txt
@@ -1,6 +1,7 @@
 add_test(NAME cmake_import_minver_configure
   COMMAND ${CMAKE_COMMAND}
     -G "${CMAKE_GENERATOR}"
+    -A "${CMAKE_GENERATOR_PLATFORM}"
     -Dnlohmann_json_DIR=${PROJECT_BINARY_DIR}
     ${CMAKE_CURRENT_SOURCE_DIR}/project
 )