diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 38454694fce..cc60519b6f0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -277,6 +277,7 @@ jobs:
     - run: rustup update nightly && rustup default nightly
     - run: rustup update stable
     - run: rustup component add rust-docs
+    - run: rustup component add rustfmt --toolchain stable
     - run: ci/validate-man.sh
     # This requires rustfmt, use stable.
     - name: Run semver-check