diff --git a/appveyor.yml b/appveyor.yml
index a3a5df3..13147a5 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -17,7 +17,8 @@ install:
 - go version
 - go env
 - mkdir c:\gopath\src\gopkg.in\urfave
-- robocopy c:\gopath\src\github.com\urfave\cli c:\gopath\src\gopkg.in\urfave\cli.v2 /E
+- robocopy c:\gopath\src\github.com\urfave\cli c:\gopath\src\gopkg.in\urfave\cli.v2
+  /DCOPY:DA /MIR /FFT /Z /XA:SH /R:0 /TEE /XJD
 - go get github.com/urfave/gfmxr/...
 - go get -v -t ./...