diff --git a/appveyor.yml b/appveyor.yml
index 533a5b0..951eda7 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -14,41 +14,18 @@ branches:
 
 environment:
   matrix:
+
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       TOOLSET: msvc-12.0,msvc-14.0
+
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       TOOLSET: msvc-14.1,clang-win
       CXXSTD: 14,17
+
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
       TOOLSET: msvc-14.2
       CXXSTD: 14,17
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      CMAKE: 1
-      CONFIG: Debug
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      CMAKE: 1
-      CONFIG: Release
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      CMAKE: 1
-      CONFIG: MinSizeRel
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      CMAKE: 1
-      CONFIG: Debug
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      CMAKE: 1
-      CONFIG: Release
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      CMAKE: 1
-      CONFIG: MinSizeRel
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      CMAKE: 1
-      CONFIG: Debug
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      CMAKE: 1
-      CONFIG: Release
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
       CMAKE: 1
       CONFIG: MinSizeRel