diff --git a/appveyor.yml b/appveyor.yml
index 0840c28..35d9d47 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,7 +5,6 @@ environment:
     # https://www.appveyor.com/docs/installed-software#python lists available
     # versions
     - PYTHON: "C:\\Python27"
-    - PYTHON: "C:\\Python33"
     - PYTHON: "C:\\Python34"
     - PYTHON: "C:\\Python35"
     - PYTHON: "C:\\Python36"