diff --git a/appveyor.yml b/appveyor.yml
index 30abd8af3..81453820b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -88,3 +88,6 @@ test_script:
     set VERBOSE=yes
 
     IF %RUN_TESTS%==yes ( ctest -C %CMAKE_CONFIG% --output-on-failure )
+
+cache:
+  - c:\tools\vcpkg\installed\