diff --git a/appveyor.yml b/appveyor.yml
index 66b03a93..64fd5f88 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -27,6 +27,7 @@ install:
   - python -m pip install paramz
   - python -m pip install nose-show-skipped
   - python -m pip install coverage
+  - python -m pip install twine
   - "python setup.py develop"
   - export `cat GPy/__version__.py | tr -d '[[:space:]]'`
 
@@ -45,7 +46,7 @@ test_script:
 
 after_test:
   # This step builds your wheels.
-  - "python setup.py bdist_wheel bdist_wininst bdist_wi"
+  - "python setup.py bdist_wheel bdist_wininst bdist_msi"
 
 artifacts:
   # bdist_wheel puts your built wheel in the dist directory
@@ -55,7 +56,8 @@ on_success:
  - "echo [pypi] > %USERPROFILE%\\.pypirc"
  - "echo username: maxz >> %USERPROFILE%\\.pypirc"
  - "echo password: %pip_upload% >> %USERPROFILE%\\.pypirc"
- - python setup.py bdist_wheel upload
+ - ls dist\
+ - twine upload dist\*.wheel
  
  
 deploy:
@@ -64,9 +66,9 @@ deploy:
   provider: GitHub
   auth_token:
     secure: a0f98391430517c6cdeb097c50d60d33f7131480 # your encrypted token from GitHub
-  artifact: dist\/.*\.exe/            # upload all NuGet packages to release assets
+  artifact: dist\*.exe            # upload wininst to GitHub
   draft: false
   prerelease: false
   on:
-    branch: deploy                 # release from master branch only
+    branch: deploy                 # release from deploy branch only
     #appveyor_repo_tag: true        # deploy on tag push only
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