diff --git a/appveyor.yml b/appveyor.yml
index f9b85b32d3..f8014b3a23 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -8,6 +8,7 @@ install:
 cache:
   - nsissetup.exe -> appveyor.yaml
   - NsProcess.zip -> appveyor.yaml
+  - thirdparty -> thirdparty\fetch-thirdparty-deps.ps1
   - thirdparty\windows -> thirdparty\fetch-thirdparty-deps.ps1
 
 before_build: