diff --git a/appveyor.yml b/appveyor.yml
index fa82bce..5b9340e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,6 +5,7 @@ notifications:
     on_build_status_changed: true
 
 environment:
+  APPVEYOR_CACHE_ENTRY_ZIP_ARGS: -t7z -m0=lzma -mx=1
   matrix:
   - TOOLSET: vs-2008
     platform: 32