diff --git a/appveyor.yml b/appveyor.yml
index b9cbe28..8bc93d4 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -25,7 +25,8 @@ cache:
 
 environment:
   R_VERSION: devel
-  PKGTYPE: binary
+  PKGTYPE: both
+  USE_RTOOLS: true
 
 build_script:
   - travis-tool.sh install_deps