diff --git a/.appveyor.yml b/.appveyor.yml
index 8cb867c2214a6419a1438f26737259463433899e..2c17fa2ec2a07caff811593274bf8a41c1998855 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -17,7 +17,7 @@ configuration:
   - Release
 
 cache:
-  - C:\projects\deps\conan
+  - C:\projects\deps\conan -> conanfile.py
 
 install:
   # All external dependencies are installed in C:\projects\deps
diff --git a/conanfile.py b/conanfile.py
index 422e4499aaaebd1d999e9a72d3fa9673089ebe5b..584dfdb8c8feb8bc8746dd91df9724840d85a178 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -1,3 +1,4 @@
+## Appveyor cache version: 1
 from conans import ConanFile, CMake
 
 class OpenGeoSysConan(ConanFile):