diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5a46f6ac1e..83322a669b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -37,7 +37,7 @@ jobs:
       run: |
         rustup set profile minimal
         rustup toolchain install nightly -c rust-docs
-        rustup default nightly
+        rustup override set nightly
     - name: Install mdbook
       run: |
         mkdir bin