diff --git a/.travis.yml b/.travis.yml
index 7d91922..51e7490 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,8 @@ matrix:
     - os: osx
       osx_image: xcode9.3
       before_install:
+        - rustup self uninstall
+        - curl https://sh.rustup.rs -sSf | sh
         - rustup install nightly
 
 script: