diff --git a/appveyor.yml b/appveyor.yml
index f39b7ca57e..a098ae7e44 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -8,6 +8,7 @@ install:
 cache:
   - nsissetup.exe -> appveyor.yaml
   - NsProcess.zip -> appveyor.yaml
+  - thirdparty\windows -> thirdparty\fetch-thirdparty-deps.ps1
 
 before_build:
 - make dependencies