diff --git a/.appveyor.yml b/.appveyor.yml
index 9efa153e3a..558fb39302 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,4 +1,3 @@
-
 os: Visual Studio 2015
 
 clone_folder: C:\calibre
@@ -19,7 +18,7 @@ platform:
     - x64
 
 before_build:
-  - C:\Python35-x64\python.exe setup/win-ci.py sw
+  - C:\Python36-x64\python.exe setup/win-ci.py sw
 
 build_script:
     - C:\sw\private\python\python.exe setup/win-ci.py build