diff --git a/appveyor.yml b/appveyor.yml
index 0e675f80b..23a513f60 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,7 +4,7 @@ environment:
 
 install:
   - appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
-  - rustup-init -yv --default-host x86_64-pc-windows-msvc --default-toolchain none
+  - rustup-init -yv --default-toolchain nightly-2019-07-10
   - set PATH=%PATH%;%USERPROFILE%\.cargo\bin
   - rustc -vV
   - cargo -vV