diff --git a/.appveyor.yml b/.appveyor.yml
index 88da12a4..9757d77b 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -5,7 +5,7 @@ version: git-{build}
 skip_tags: true
 
 # VM Template
-image: Visual Studio 2015
+image: Visual Studio 2017
 
 # Clone depth
 clone_depth: 1
@@ -17,15 +17,15 @@ branches:
 
 # Environment variables
 environment:
+  NINJA_URL: https://github.com/ninja-build/ninja/releases/download/v1.9.0/ninja-win.zip
+  VSVARSALLPATH: 'C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvarsall.bat'
   matrix:
     - builder: msvc_ninja_64
-      PYTHON: 'C:\\Python36-x64'
+      PYTHON: 'C:\\Python37-x64'
       BUILD_DIR: build
-      NINJA_URL: https://github.com/ninja-build/ninja/releases/download/v1.7.2/ninja-win.zip
     - builder: msvc_ninja_32
-      PYTHON: 'C:\\Python36'
+      PYTHON: 'C:\\Python37'
       BUILD_DIR: build
-      NINJA_URL: https://github.com/ninja-build/ninja/releases/download/v1.7.2/ninja-win.zip
 
 # Required softwares for building
 install:
@@ -35,9 +35,8 @@ install:
 
 # Build scripts
 build_script:
-  - cmd: if %builder% == msvc_ninja_64 ( call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x64 && %PYTHON%\\python.exe meson.py build && ninja -C build )
-
-  - cmd: if %builder% == msvc_ninja_32 ( call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86 && %PYTHON%\\python.exe meson.py build && ninja -C build )
+  - cmd: if %builder% == msvc_ninja_64 ( call "%VSVARSALLPATH%" x64 && %PYTHON%\\python.exe meson.py build && ninja -C build )
+  - cmd: if %builder% == msvc_ninja_32 ( call "%VSVARSALLPATH%" x86 && %PYTHON%\\python.exe meson.py build && ninja -C build )
 
 ## Artifacts
 #artifacts: