diff --git a/appveyor.yml b/appveyor.yml
index e920b58..25cc8d0 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -14,7 +14,17 @@ branches:
 environment:
   matrix:
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      TOOLSET: msvc-9.0
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      TOOLSET: msvc-10.0
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      TOOLSET: msvc-11.0
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      TOOLSET: msvc-12.0
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      TOOLSET: msvc-14.0
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      TOOLSET: msvc-14.1
 
 install:
   - cd ..
@@ -31,4 +41,4 @@ install:
 build: off
 
 test_script:
-  - b2 libs/preprocessor/test toolset=msvc-9.0,msvc-10.0,msvc-11.0,msvc-12.0,msvc-14.0,msvc-14.1
+  - b2 libs/preprocessor/test toolset=%TOOLSET%