diff --git a/appveyor.yml b/appveyor.yml
index 9b1ea46f6..562d433f1 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,11 +4,21 @@ clone_depth: 10
 
 environment:
   matrix:
+    - VisualStudioVersion: 10.0
+      platform: "Win32"
+      configuration: "Debug"
+      vcvarsall_platform: "x86"
+      PlatformToolset: "v100"
     - VisualStudioVersion: 10.0
       platform: "Win32"
       configuration: "Release"
       vcvarsall_platform: "x86"
       PlatformToolset: "v100"
+    - VisualStudioVersion: 10.0
+      platform: "x64"
+      configuration: "Debug"
+      vcvarsall_platform: "x64"
+      PlatformToolset: "v100"
     - VisualStudioVersion: 10.0
       platform: "x64"
       configuration: "Release"