diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..ca79ca5
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d51fee0..d79a705 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,7 +17,7 @@ jobs:
           - macos-latest
           - ubuntu-latest
           - windows-latest
-        ocaml-version:
+        ocaml-version:          
           - 4.02.x
           - 4.03.x
           - 4.04.x
@@ -34,6 +34,25 @@ jobs:
           - 5.0.x
           - 5.1.x
           - 5.2.x
+        exclude:
+          - os: macos-latest
+            ocaml-version: 4.02.x
+          - os: macos-latest
+            ocaml-version: 4.03.x
+          - os: macos-latest
+            ocaml-version: 4.04.x
+          - os: macos-latest
+            ocaml-version: 4.05.x
+          - os: macos-latest
+            ocaml-version: 4.06.x
+          - os: macos-latest
+            ocaml-version: 4.07.x
+          - os: macos-latest
+            ocaml-version: 4.08.x
+          - os: macos-latest
+            ocaml-version: 4.09.x
+          - os: macos-latest
+            ocaml-version: 4.11.x
 
     runs-on: ${{ matrix.os }}
 
@@ -57,7 +76,7 @@ jobs:
           git config --global init.defaultBranch master
 
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Use OCaml ${{ matrix.ocaml-version }}
         uses: ocaml/setup-ocaml@v2
@@ -74,7 +93,7 @@ jobs:
         run: opam exec -- make
 
       - name: Upload the build artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.os }}-${{ matrix.ocaml-version }}-cppo.exe
           path: _build/default/src/cppo_main.exe