diff --git a/appveyor.yml b/appveyor.yml
index 81a9c05..113ec48 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -53,6 +53,7 @@ install:
   - vcpkg install zlib
   - vcpkg install lua
 
+cache: c:\tools\vcpkg\installed\
 
 #---------------------------------#
 #       build configuration       #