diff --git a/.appveyor.yml b/.appveyor.yml
index e983faa0..2d994cf5 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -17,11 +17,11 @@ environment:
       PYTHON_VERSION: "3.8.x"
       PYTHON_ARCH: "64"
 
-    - TOXENV: py39-no-ext
-      PYTHON: "C:\\Python39-x64\\python"
-      PYTHONPATH: "C:\\Python39-x64"
-      PYTHON_VERSION: "3.9.x"
-      PYTHON_ARCH: "64"
+    # - TOXENV: py39-no-ext
+    #   PYTHON: "C:\\Python39-x64\\python"
+    #   PYTHONPATH: "C:\\Python39-x64"
+    #   PYTHON_VERSION: "3.9.x"
+    #   PYTHON_ARCH: "64"
 
 init: SET "PATH=%PYTHON%;%PYTHON%\\Scripts;%PATH%"