diff --git a/.appveyor.yml b/.appveyor.yml
index b9e112aa0860..16fd20c9da61 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -27,7 +27,7 @@ install:
     - rustup-init.exe -y --default-host %TARGET% --default-toolchain stable --profile minimal
     - set PATH=%USERPROFILE%\.cargo\bin;%PATH%
     - rustup default stable
-    - rustup uninstall beta
+    - rustup toolchain uninstall beta
     - rustup update
     # Install "master" toolchain
     - cargo install rustup-toolchain-install-master & exit 0
diff --git a/.travis.yml b/.travis.yml
index a080ab55b94f..cbb7c69db1cd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,7 +34,7 @@ before_script:
 - curl https://build.travis-ci.org/files/rustup-init.sh -sSf | sh -s -- -y --default-toolchain stable --profile minimal
 - export PATH=$HOME/.cargo/bin:$PATH
 - rustup default stable
-- rustup uninstall beta
+- rustup toolchain uninstall beta
 - rustup update
 # Install "master" toolchain
 - cargo install rustup-toolchain-install-master || echo "rustup-toolchain-install-master already installed"