diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index c8b8a5594a..838590053d 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -48,7 +48,6 @@ jobs:
           args: --out dist
       - name: "Test sdist"
         run: |
-          rustup default $(cat rust-toolchain)
           pip install dist/${{ env.PACKAGE_NAME }}-*.tar.gz --force-reinstall
           ruff --help
           python -m ruff --help
diff --git a/pyproject.toml b/pyproject.toml
index 2e95c169e3..e1a9069c3d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,6 +52,9 @@ exclude = [
   "crates/ruff_linter/resources/test/fixtures/**/*",
   "crates/ruff_linter/src/rules/*/snapshots/**/*"
 ]
+include = [
+  "rust-toolchain.toml"
+]
 
 [tool.ruff]
 extend-exclude = [