diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ffcb39e..ac035e2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,4 +1,4 @@
-name: CI (Pull Request)
+name: CI (main)
 
 on:
   push:
@@ -13,7 +13,8 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
+      - name: setup rust toolchain
+        run: rustup show
       - uses: taiki-e/install-action@nextest
       - uses: taiki-e/install-action@mdbook
       - name: check and build
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 0a43b8f..2ef2348 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -1,4 +1,4 @@
-name: CI (Pull Request)
+name: CI (pull request)
 
 on:
   pull_request:
@@ -13,7 +13,8 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
+      - name: setup rust toolchain
+        run: rustup show
       - uses: taiki-e/install-action@nextest
       - uses: taiki-e/install-action@mdbook
       - name: check and build