diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f7d8fe4..9add8cf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,7 +44,7 @@ jobs:
         uses: nixbuild/nix-quick-install-action@9f63be77f412a248c9d9a65a4c82cf066cdf8f0c # v35
 
       - name: Install Rust (${{ matrix.toolchain.name }})
-        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
+        uses: actions-rust-lang/setup-rust-toolchain@ecabd13d1c56bd1345c230e542e9144811ad706f # v2.0.0
         with:
           toolchain: ${{ matrix.toolchain.version }}
 
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 6412900..5826d19 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -19,7 +19,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install Rust
-        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
+        uses: actions-rust-lang/setup-rust-toolchain@ecabd13d1c56bd1345c230e542e9144811ad706f # v2.0.0
         with:
           components: llvm-tools-preview
 
diff --git a/.github/workflows/docs-preview.yml b/.github/workflows/docs-preview.yml
index 97f9e4b..4691c17 100644
--- a/.github/workflows/docs-preview.yml
+++ b/.github/workflows/docs-preview.yml
@@ -23,7 +23,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Rust
-        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
+        uses: actions-rust-lang/setup-rust-toolchain@ecabd13d1c56bd1345c230e542e9144811ad706f # v2.0.0
 
       - name: Build documentation
         env:
@@ -49,6 +49,12 @@ jobs:
     if: ${{ !cancelled() && github.event.pull_request.head.repo.full_name == github.repository && (github.event.action == 'closed' || needs.build.result == 'success') }}
     runs-on: ubuntu-latest
 
+    # Pages builds share gh-pages, so wait for each deployment before the next push.
+    concurrency:
+      group: rustdoc-preview-deploy
+      cancel-in-progress: false
+      queue: max
+
     permissions:
       actions: read
       contents: write
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 2184b65..1a7cd23 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -25,7 +25,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Rust
-        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
+        uses: actions-rust-lang/setup-rust-toolchain@ecabd13d1c56bd1345c230e542e9144811ad706f # v2.0.0
         with:
           components: clippy
 
@@ -48,7 +48,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Rust (nightly)
-        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
+        uses: actions-rust-lang/setup-rust-toolchain@ecabd13d1c56bd1345c230e542e9144811ad706f # v2.0.0
         with:
           toolchain: nightly
           components: rustfmt
@@ -63,7 +63,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Rust
-        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
+        uses: actions-rust-lang/setup-rust-toolchain@ecabd13d1c56bd1345c230e542e9144811ad706f # v2.0.0
         with:
           components: rust-docs
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 3b9f7e6..30b8885 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,7 +21,7 @@ jobs:
           persist-credentials: true
 
       - name: Install Rust
-        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
+        uses: actions-rust-lang/setup-rust-toolchain@ecabd13d1c56bd1345c230e542e9144811ad706f # v2.0.0
 
       - name: Authenticate with crates.io
         uses: rust-lang/crates-io-auth-action@c6f97d42243bad5fab37ca0427f495c86d5b1a18 # v1.0.5