diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4131ecd..bb6a691 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,27 +13,25 @@ jobs:
       matrix:
         os:
           - macos-latest
+          - macos-latest-large
           - ubuntu-latest
           - windows-latest
-        ocaml-version:
-          - 4.11.1
+        ocaml-compiler:
+          - "5.2"
         include:
           - os: ubuntu-latest
-            ocaml-version: 4.07.0
+            ocaml-version: "4.14"
     runs-on: ${{ matrix.os }}
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: setup-ocaml
-        uses: avsm/setup-ocaml@v1
+        uses: ocaml/setup-ocaml@v3
         with:
-          ocaml-version: ${{ matrix.ocaml-version }}
+          ocaml-compiler: ${{ matrix.ocaml-compiler }}
       - name: setup
         run: |
-          opam pin add . -y --no-action
-          opam depext -y ocb
-          opam install -y ./*.opam --deps-only --with-test
-          opam upgrade --fixup
+          opam install . --deps-only --with-test --with-doc
       - name: build
         run: opam exec -- dune build @install
       - name: test
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 3d90108..b670b1c 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -8,27 +8,24 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           submodules: recursive
           persist-credentials: false
       - name: setup-ocaml
-        uses: avsm/setup-ocaml@v1
+        uses: ocaml/setup-ocaml@v3
         with:
-          ocaml-version: 4.10.0
+          ocaml-compiler: "5.2"
       - name: setup-deploy
         run: |
-          opam pin add . -y --no-action
-          opam depext -y ocb
-          opam install -y ./*.opam --deps-only --with-test --with-doc
-          opam upgrade --fixup
-          touch doc/.nojekyll
+          opam install . --deps-only --with-test --with-doc
       - name: api
         run: |
-          opam exec -- dune build @doc
+          touch doc/.nojekyll
+          opam exec - dune build @doc
           mv _build/default/_doc/_html doc/api
       - name: deploy
-        uses: JamesIves/github-pages-deploy-action@3.6.2
+        uses: JamesIves/github-pages-deploy-action@4.7.2
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           BRANCH: gh-pages
diff --git a/dune-project b/dune-project
index f44163e..bb95179 100644
--- a/dune-project
+++ b/dune-project
@@ -24,7 +24,7 @@
    "An OCaml library for SVG badge generation. There's also a command-line tool provided.")
  (depends
   (ocaml
-   (>= 4.05))
+   (>= 4.14))
   cmdliner
   dune
   prelude
diff --git a/ocb.opam b/ocb.opam
index 9091177..7b8e115 100644
--- a/ocb.opam
+++ b/ocb.opam
@@ -10,7 +10,8 @@ homepage: "https://ocamlpro.github.io/ocb/"
 doc: "https://ocamlpro.github.io/ocb/api/"
 bug-reports: "https://github.com/OCamlPro/ocb/issues"
 depends: [
-  "ocaml" {>= "4.05"}
+  "ocaml" {>= "4.14"}
+  "cmdliner"
   "dune" {>= "3.0"}
   "prelude"
   "odoc" {with-doc}