diff --git a/appveyor-patch.ps1 b/appveyor-patch.ps1
new file mode 100644
index 0000000..34d2163
--- /dev/null
+++ b/appveyor-patch.ps1
@@ -0,0 +1,11 @@
+# Script to patch Appveyor build environment for Visual Studio 2008 64bit
+
+$url = "https://github.com/menpo/condaci/raw/master/vs2008_patch.zip"
+$output = "$pwd\build\vs2008_patch.zip"
+
+(New-Object System.Net.WebClient).DownloadFile($url, $output)
+
+7z -e "$pwd\build\vs2008_patch.zip"
+cmd.exe /c "$pwd\build\vs2008_patch\setup_x64.bat"
+
+
diff --git a/appveyor.yml b/appveyor.yml
index db5f2a4..f9c586a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -72,6 +72,7 @@ configuration:
 
 
 build_script:
+  - ps: if($env:PLATFORM -eq "x64" -And $GENERATOR -eq 'Visual Studio 9 2008') { .\appveyor-patch.ps1 }
   - ps: if($env:PLATFORM -eq "x64") { $env:CMAKE_GEN_SUFFIX=" Win64" }
   - cmake "-G%GENERATOR%%CMAKE_GEN_SUFFIX%" -DBUILD_SHARED_LIBS=%BUILD_SHARED_LIBS% -DENABLE_CJSON_TEST=%ENABLE_CJSON_TEST%  -H. -Bbuild
   - cmake --build build --config "%CONFIGURATION%"