diff --git a/.github/workflows/ci-post-merge.yml b/.github/workflows/ci-post-merge.yml
index 88f09cae..f8c59957 100644
--- a/.github/workflows/ci-post-merge.yml
+++ b/.github/workflows/ci-post-merge.yml
@@ -59,7 +59,7 @@ jobs:
           echo "RUSTFLAGS=-C target-feature=+crt-static" >> $GITHUB_ENV
 
       - name: Install Rust (${{ matrix.version }})
-        uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+        uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
         with:
           toolchain: ${{ matrix.version }}
 
@@ -116,7 +116,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust (nightly)
-        uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+        uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
         with:
           toolchain: nightly
 
@@ -135,7 +135,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust
-        uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+        uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
 
       - name: Install cargo-nextest
         uses: taiki-e/install-action@v2.38.1
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 498bed05..a21c73af 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -68,7 +68,7 @@ jobs:
           echo "RUSTFLAGS=-C target-feature=+crt-static" >> $GITHUB_ENV
 
       - name: Install Rust (${{ matrix.version.name }})
-        uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+        uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
         with:
           toolchain: ${{ matrix.version.version }}
 
@@ -120,7 +120,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust (nightly)
-        uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+        uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
         with:
           toolchain: nightly
 
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 4833208c..f8352649 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust
-        uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+        uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
         with:
           components: llvm-tools-preview
 
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index de035422..8531177b 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+      - uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
         with:
           toolchain: nightly
           components: rustfmt
@@ -35,7 +35,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+      - uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
         with: { components: clippy }
 
       - uses: giraffate/clippy-action@v1.0.1
@@ -50,7 +50,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust (nightly-2023-10-10)
-        uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+        uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
         with:
           toolchain: nightly-2023-10-10
 
diff --git a/.github/workflows/upload-doc.yml b/.github/workflows/upload-doc.yml
index 60ddab09..894a3492 100644
--- a/.github/workflows/upload-doc.yml
+++ b/.github/workflows/upload-doc.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions-rust-lang/setup-rust-toolchain@v1.8.0
+      - uses: actions-rust-lang/setup-rust-toolchain@v1.9.0
         with: { toolchain: nightly }
 
       - name: Build Docs