diff --git a/.appveyor_msys_build.sh b/.appveyor_msys_build.sh
new file mode 100644
index 00000000..8da330a8
--- /dev/null
+++ b/.appveyor_msys_build.sh
@@ -0,0 +1,5 @@
+export PATH=/c/msys64/mingw$ABI/bin:$PATH
+cd /c/projects/mpir
+./configure ABI=$ABI
+make
+make check
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 00000000..cf3ea2e2
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,31 @@
+version: 1.0.{build}
+build:
+  verbosity: minimal
+  
+environment:
+  matrix:
+    - BUILD_TYPE: Release
+      COMPILER: MSVC15
+      PLATFORM: x64
+    - BUILD_TYPE: Release
+      COMPILER: MSVC15
+      PLATFORM: Win32
+    - COMPILER: MinGW-w64
+      ABI: 64
+    - COMPILER: MinGW-w64
+      ABI: 32
+    - BUILD_TYPE: Debug
+      COMPILER: MSVC15
+      PLATFORM: x64
+    - BUILD_TYPE: Debug
+      COMPILER: MSVC15
+      PLATFORM: Win32
+ 
+build_script:
+  - if [%COMPILER%]==[MinGW-w64] C:\msys64\usr\bin\sh.exe --login /c/projects/mpir/.appveyor_msys_build.sh
+  - if [%COMPILER%]==[MSVC15] cd build.vc14
+  - if [%COMPILER%]==[MSVC15] msbuild.bat gc lib %PLATFORM% %BUILD_TYPE% +tests
+
+test_script:
+  - if [%COMPILER%]==[MSVC15] cd mpir-tests
+  - if [%COMPILER%]==[MSVC15] python %cd%\run-tests.py 0
diff --git a/build.vc14/msbuild.bat b/build.vc14/msbuild.bat
index dbc6b96a..58229f21 100644
--- a/build.vc14/msbuild.bat
+++ b/build.vc14/msbuild.bat
@@ -30,8 +30,7 @@ if /i "%libp%" == "LIB" (
 )
 
 if /i "%5" EQU "+tests" (
-  set TESTDIR=.\mpir-tests\
-  for /d %%d in (%TESTDIR%*) do (
+  for /d %%d in (mpir-tests\*) do (
     for %%f in (%%d\*.vcxproj) do (
       %msbdir%\msbuild.exe /property:SolutionDir=..\..\ /property:OutDir=..\..\%plat%\%conf%\ /p:Platform=%plat% /p:Configuration=%conf% %%f
     )