diff --git a/.appveyor.yml b/.appveyor.yml
index 3cb4eb9..dbb127b 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -18,11 +18,6 @@
   PYTHON_PATH: "C:/Python35"
   PYTHON_PACKAGE_PATH: "C:/Python35/Scripts"
 
-# Cache the external directory to improve build times.
-# If the appveyor config file changes, invalidate the cache.
-cache:
-    - external -> .appveyor.yml
-
 branches:
   only:
     - master