diff --git a/.appveyor.yml b/.appveyor.yml
index f6f1c4fe3..ddc32f11a 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -9,6 +9,7 @@ environment:
   - platform: win32
 install:
 - ps: "& .\\win32\\install-openssl.ps1"
+- ps: "& .\\win32\\install-coapp.ps1"
 cache:
 - c:\OpenSSL-Win32
 - c:\OpenSSL-Win64
diff --git a/win32/install-coapp.ps1 b/win32/install-coapp.ps1
new file mode 100644
index 000000000..0bfb0d291
--- /dev/null
+++ b/win32/install-coapp.ps1
@@ -0,0 +1,11 @@
+# Download the CoApp tools.
+$msiPath = "$($env:USERPROFILE)\\CoApp.Tools.Powershell.msi"
+
+(New-Object Net.WebClient).DownloadFile('http://coapp.org/files/CoApp.Tools.Powershell.msi', $msiPath)
+
+# Install the CoApp tools from the downloaded .msi.
+Start-Process -FilePath msiexec -ArgumentList /i, $msiPath, /quiet -Wait
+
+# Make the tools available for later PS scripts to use.
+$env:PSModulePath = $env:PSModulePath + ';C:\\Program Files (x86)\\Outercurve Foundation\\Modules'
+Import-Module CoApp