diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e8da840..72c7414 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,4 +1,4 @@
-on: 
+on:
   push:
     branches:
       - main
@@ -9,35 +9,30 @@ name: Continuous Integration
 
 jobs:
   macos:
-    name: Test and Lint (macos)
+    name: macos
     runs-on: macos-latest
     strategy:
       matrix:
         rust:
           - stable
-          - 1.67.0
+          - beta
+          - stable minus 6 releases
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
+      - uses: actions/checkout@v4
+      - uses: Swatinem/rust-cache@v2
+      - uses: dtolnay/rust-toolchain@stable
         with:
-          profile: minimal
           toolchain: ${{ matrix.rust }}
-          override: true
-      - run: rustup component add clippy
-      - name: check
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-      - name: test
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --no-run
-      - name: clippy
-        uses: actions-rs/cargo@v1
-        with:
-          command: clippy
-          args: -- -D warnings
+          components: clippy, rustfmt
+
+      - name: check (default features)
+        run: cargo check
+
+      - name: test (default features)
+        run: cargo test --no-run
+
+      - name: clippy (default features)
+        run: cargo clippy -- -D warnings
 
   clang-format:
     name: test clang-format
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
new file mode 100644
index 0000000..4b9120d
--- /dev/null
+++ b/.github/workflows/pull-request.yml
@@ -0,0 +1,20 @@
+name: Pull request
+# This workflow is triggered on pushes to the repository.
+on: [ pull_request ]
+
+jobs:
+  check:
+    name: Check Commit Message
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          # A PR should not contain too many commits
+          fetch-depth: 10
+      - name: Validate commit messages
+        run: |
+          git show-ref
+          curl -sSfL https://github.com/convco/convco/releases/latest/download/convco-ubuntu.zip | zcat > convco
+          chmod +x convco
+          ./convco check ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }}
+          rm convco
diff --git a/.github/workflows/semver-checks.yml b/.github/workflows/semver-checks.yml
new file mode 100644
index 0000000..205f0c2
--- /dev/null
+++ b/.github/workflows/semver-checks.yml
@@ -0,0 +1,18 @@
+name: Semver Checks
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  semver:
+    name: cargo-semver-checks
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+
+      - name: check semver
+        uses: obi1kenobi/cargo-semver-checks-action@v2.6