diff --git a/.github/workflows/clippy.yml b/.github/workflows/clippy.yml
index 390fa67c..409793df 100644
--- a/.github/workflows/clippy.yml
+++ b/.github/workflows/clippy.yml
@@ -32,7 +32,6 @@ jobs:
       - name: Setup Rust
         uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          toolchain: 1.90.0
           components: clippy
       - name: Run clippy
         run: cargo clippy --workspace --features ${{ matrix.features }} -- -D warnings
diff --git a/.github/workflows/rustfmt.yml b/.github/workflows/rustfmt.yml
index f3c952a9..16823342 100644
--- a/.github/workflows/rustfmt.yml
+++ b/.github/workflows/rustfmt.yml
@@ -23,7 +23,6 @@ jobs:
       - name: Setup Rust
         uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          toolchain: 1.90.0
           components: rustfmt
       - name: Rustfmt check
         if: ${{ github.event_name != 'pull_request' }}
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 00000000..f35f369c
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,3 @@
+[toolchain]
+channel = "1.90.0"
+components = ["clippy", "rustfmt"]