diff --git a/.github/workflows/bp256.yml b/.github/workflows/bp256.yml
index e4f8505b..a7dd8e48 100644
--- a/.github/workflows/bp256.yml
+++ b/.github/workflows/bp256.yml
@@ -31,12 +31,10 @@ jobs:
           - wasm32-unknown-unknown
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
-          profile: minimal
+          targets: ${{ matrix.target }}
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features ecdsa
@@ -55,11 +53,9 @@ jobs:
           - stable
     steps:
     - uses: actions/checkout@v3
-    - uses: actions-rs/toolchain@v1
+    - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ matrix.rust }}
-        override: true
-        profile: minimal
     - run: cargo check --all-features
     - run: cargo test --no-default-features
     - run: cargo test
@@ -70,9 +66,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: RustCrypto/actions/cargo-cache@master
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
-          override: true
-          profile: minimal
       - run: cargo doc --all-features
diff --git a/.github/workflows/bp384.yml b/.github/workflows/bp384.yml
index fb97de8a..020a6e6b 100644
--- a/.github/workflows/bp384.yml
+++ b/.github/workflows/bp384.yml
@@ -31,12 +31,10 @@ jobs:
           - wasm32-unknown-unknown
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
-          profile: minimal
+          targets: ${{ matrix.target }}
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features ecdsa
@@ -55,11 +53,9 @@ jobs:
           - stable
     steps:
     - uses: actions/checkout@v3
-    - uses: actions-rs/toolchain@v1
+    - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ matrix.rust }}
-        override: true
-        profile: minimal
     - run: cargo check --all-features
     - run: cargo test --no-default-features
     - run: cargo test
@@ -70,9 +66,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: RustCrypto/actions/cargo-cache@master
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
-          override: true
-          profile: minimal
       - run: cargo doc --all-features
diff --git a/.github/workflows/k256.yml b/.github/workflows/k256.yml
index 79ecc8ec..44e5a29f 100644
--- a/.github/workflows/k256.yml
+++ b/.github/workflows/k256.yml
@@ -31,12 +31,10 @@ jobs:
           - wasm32-unknown-unknown
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features arithmetic
@@ -65,11 +63,9 @@ jobs:
           - stable
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-          override: true
-          profile: minimal
       - run: cargo build --all-features --benches
 
   test:
@@ -93,12 +89,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - run: ${{ matrix.deps }}
       - run: cargo check --target ${{ matrix.target }} --all-features
       - run: cargo test --release --target ${{ matrix.target }} --no-default-features
@@ -131,12 +125,10 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - run: ${{ matrix.deps }}
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - uses: RustCrypto/actions/cross-install@master
       - run: cross test --release --target ${{ matrix.target }} --all-features
 
@@ -145,9 +137,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: RustCrypto/actions/cargo-cache@master
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
-          override: true
-          profile: minimal
       - run: cargo doc --all-features
diff --git a/.github/workflows/p224.yml b/.github/workflows/p224.yml
index 5db82ae4..a27e8e4e 100644
--- a/.github/workflows/p224.yml
+++ b/.github/workflows/p224.yml
@@ -31,12 +31,10 @@ jobs:
           - wasm32-unknown-unknown
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
-          profile: minimal
+          targets: ${{ matrix.target }}
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features pkcs8
@@ -64,12 +62,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - run: ${{ matrix.deps }}
       - run: cargo check --target ${{ matrix.target }} --all-features
       - run: cargo test --release --target ${{ matrix.target }} --no-default-features
@@ -81,9 +77,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: RustCrypto/actions/cargo-cache@master
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
-          override: true
-          profile: minimal
       - run: cargo doc --all-features
diff --git a/.github/workflows/p256.yml b/.github/workflows/p256.yml
index 87fc8a7c..e9ac49cd 100644
--- a/.github/workflows/p256.yml
+++ b/.github/workflows/p256.yml
@@ -31,12 +31,10 @@ jobs:
           - wasm32-unknown-unknown
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features arithmetic
@@ -74,12 +72,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - run: ${{ matrix.deps }}
       - run: cargo check --target ${{ matrix.target }} --all-features
       - run: cargo test --release --target ${{ matrix.target }} --no-default-features
@@ -112,12 +108,10 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - run: ${{ matrix.deps }}
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - uses: RustCrypto/actions/cross-install@master
       - run: cross test --release --target ${{ matrix.target }} --all-features
 
@@ -126,9 +120,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: RustCrypto/actions/cargo-cache@master
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
-          override: true
-          profile: minimal
       - run: cargo doc --all-features
diff --git a/.github/workflows/p384.yml b/.github/workflows/p384.yml
index d630c2e5..e2202fa0 100644
--- a/.github/workflows/p384.yml
+++ b/.github/workflows/p384.yml
@@ -31,12 +31,10 @@ jobs:
           - wasm32-unknown-unknown
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
-          profile: minimal
+          targets: ${{ matrix.target }}
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features arithmetic
@@ -71,12 +69,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - run: ${{ matrix.deps }}
       - run: cargo check --target ${{ matrix.target }} --all-features
       - run: cargo test --release --target ${{ matrix.target }} --no-default-features
@@ -109,12 +105,10 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - run: ${{ matrix.deps }}
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - uses: RustCrypto/actions/cross-install@master
       - run: cross test --release --target ${{ matrix.target }} --all-features
 
@@ -123,9 +117,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: RustCrypto/actions/cargo-cache@master
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
-          override: true
-          profile: minimal
       - run: cargo doc --all-features
diff --git a/.github/workflows/p521.yml b/.github/workflows/p521.yml
index 9c9a76fa..7b8c2929 100644
--- a/.github/workflows/p521.yml
+++ b/.github/workflows/p521.yml
@@ -31,12 +31,10 @@ jobs:
           - wasm32-unknown-unknown
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
-          profile: minimal
+          targets: ${{ matrix.target }}
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc
 
@@ -61,12 +59,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
+          targets: ${{ matrix.target }}
       - run: ${{ matrix.deps }}
       - run: cargo check --target ${{ matrix.target }} --all-features
       - run: cargo test --release --target ${{ matrix.target }} --no-default-features
@@ -78,9 +74,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: RustCrypto/actions/cargo-cache@master
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
-          override: true
-          profile: minimal
       - run: cargo doc --all-features
diff --git a/.github/workflows/primeorder.yml b/.github/workflows/primeorder.yml
index 772dc03a..c0a719b8 100644
--- a/.github/workflows/primeorder.yml
+++ b/.github/workflows/primeorder.yml
@@ -31,12 +31,10 @@ jobs:
           - wasm32-unknown-unknown
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
-          override: true
-          profile: minimal
+          targets: ${{ matrix.target }}
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features
 
   test:
@@ -48,11 +46,9 @@ jobs:
           - stable
     steps:
     - uses: actions/checkout@v3
-    - uses: actions-rs/toolchain@v1
+    - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ matrix.rust }}
-        override: true
-        profile: minimal
     - run: cargo check --all-features
     - run: cargo test --no-default-features
     - run: cargo test
@@ -63,9 +59,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: RustCrypto/actions/cargo-cache@master
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
-          override: true
-          profile: minimal
       - run: cargo doc --all-features
diff --git a/.github/workflows/security-audit.yml b/.github/workflows/security-audit.yml
index fa524635..4096f49e 100644
--- a/.github/workflows/security-audit.yml
+++ b/.github/workflows/security-audit.yml
@@ -14,11 +14,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
-          override: true
-          profile: minimal
       - uses: actions/cache@v3
         with:
           path: ~/.cargo/bin
diff --git a/.github/workflows/workspace.yml b/.github/workflows/workspace.yml
index 318e0fef..6a687fdc 100644
--- a/.github/workflows/workspace.yml
+++ b/.github/workflows/workspace.yml
@@ -18,25 +18,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: actions-rs/toolchain@v1
+    - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: 1.66.0
         components: clippy
-        override: true
-        profile: minimal
     - run: cargo clippy --all --all-features -- -D warnings
 
   rustfmt:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
           components: rustfmt
-          override: true
-          profile: minimal
-      - uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check
+      - run: cargo fmt --all -- --check