diff --git a/.circleci/config.yml b/.circleci/config.yml
index 4d0722cfb..49d8b10d5 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -103,7 +103,7 @@ jobs:
       - run:
           name: Install Rust
           command: |
-            curl https://sh.rustup.rs -sSf | sh -s -- -y
+            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain nightly
             export PATH="$HOME/.cargo/bin:$PATH"
             cargo --version
       - run: