diff --git a/.appveyor.yml b/.appveyor.yml
index d7f6dfd..89fe302 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,11 +1,5 @@
 environment:
   matrix:
-    - platform: x86
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      generator: "Visual Studio 14 2015"
-      compiler: msvc
-      configuration: Release
-
     - platform: x86
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       generator: "MinGW Makefiles"
@@ -13,12 +7,6 @@ environment:
       toolchain: C:/mingw-w64/i686-6.3.0-posix-dwarf-rt_v5-rev1
       configuration: Release
 
-    - platform: x64
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      generator: "Visual Studio 14 2015 Win64"
-      compiler: msvc
-      configuration: Release
-
     - platform: x64
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       generator: "MinGW Makefiles"
@@ -26,18 +14,6 @@ environment:
       toolchain: C:/mingw-w64/x86_64-7.2.0-posix-seh-rt_v5-rev1
       configuration: Release
 
-    - platform: x86
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      generator: "Visual Studio 15 2017"
-      compiler: msvc
-      configuration: Release
-
-    - platform: x64
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      generator: "Visual Studio 15 2017 Win64"
-      compiler: msvc
-      configuration: Release
-
 matrix:
   fast_finish: false
 
@@ -54,7 +30,7 @@ build_script:
   - cd build
   - if [%compiler%]==[msvc] cmake -G"%generator%" ..
   - if [%compiler%]==[mingw] set PATH=%toolchain%/bin;%PATH%
-  - if [%compiler%]==[mingw] cmake -G"%generator%" -DCMAKE_SH=CMAKE_SH-NOTFOUND -DCMAKE_CXX_COMPILER=%toolchain%/bin/g++ -DCMAKE_C_COMPILER=%toolchain%/bin/gcc -DCMAKE_PREFIX_PATH=%toolchain% -DCMAKE_BUILD_TYPE=%configuration% ..
+  - if [%compiler%]==[mingw] cmake -G"%generator%" -DCMAKE_SH=CMAKE_SH-NOTFOUND -DCMAKE_CXX_COMPILER=%toolchain%/bin/g++.exe -DCMAKE_C_COMPILER=%toolchain%/bin/gcc.exe -DCMAKE_PREFIX_PATH=%toolchain% -DCMAKE_BUILD_TYPE=%configuration% ..
   - cmake --build . --config %configuration%
   
 test_script: