diff --git a/.github/workflows/check-generated-files.yml b/.github/workflows/check-generated-files.yml
index 920d9b0..906cc52 100644
--- a/.github/workflows/check-generated-files.yml
+++ b/.github/workflows/check-generated-files.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup OCaml
         uses: ocaml/setup-ocaml@v3
         with:
@@ -44,10 +44,11 @@ jobs:
           - 5.0.x
           - 5.1.x
           - 5.2.x
+          - 5.3.x
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup OCaml
         uses: ocaml/setup-ocaml@v3
         with:
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7f37562..7e0a3be 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup OCaml
         uses: ocaml/setup-ocaml@v3
         with:
@@ -56,7 +56,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup OCaml
         uses: ocaml/setup-ocaml@v3
         with:
@@ -64,27 +64,3 @@ jobs:
       - name: Make stdcompat
         run: |
           opam exec -- sh -xc ".github/scripts/build-${{ matrix.builder }}.sh"
-
-#  build-ubuntu-ocaml-5-beta:
-#    strategy:
-#      fail-fast: false
-#      matrix:
-#        builder:
-#          - dune
-#          - make
-#          - make-no-magic
-#    runs-on: ubuntu-latest
-#    container:
-#      image: ghcr.io/thierry-martinez/stdcompat-ocaml-5-beta
-#      credentials:
-#        username: ${{ github.actor }}
-#        password: ${{ secrets.packages_actions_read }}
-#    steps:
-#      - name: Checkout
-#        uses: actions/checkout@v3
-#      - name: Make stdcompat
-#        run: |
-#          chown -R ci $PWD && \
-#          su ci -c "sh -xc \".github/scripts/build-in-docker.sh \
-#            5.0.0~alpha1 \
-#            \\\"${{ matrix.builder }}\\\"\""
diff --git a/.github/workflows/windows.yml.disabled b/.github/workflows/windows.yml.disabled
deleted file mode 100644
index 962728e..0000000
--- a/.github/workflows/windows.yml.disabled
+++ /dev/null
@@ -1,18 +0,0 @@
-name: windows
-on: [push]
-jobs:
-  build-windows:
-    runs-on: windows-latest
-    steps:
-      - name: Setup Cygwin and mingw64
-        run: |
-          choco install cygwin
-          # patch is needed for opam
-          choco install --source cygwin rsync patch diffutils curl make unzip git m4 perl mingw64-x86_64-gcc-core mingw64-x86_64-gcc-g++
-      - name: Setup opam
-        run: |
-          $env:PATH = 'C:\tools\cygwin\usr\local\bin;C:\tools\cygwin\bin;' + $env:PATH
-          curl -o opam64.tar.xz -L https://github.com/fdopen/opam-repository-mingw/releases/download/0.0.0.2/opam64.tar.xz
-          tar -xf opam64.tar.xz
-          bash opam64/install.sh
-          opam init default "https://github.com/fdopen/opam-repository-mingw.git#opam2" -c "ocaml-variants.4.14.0+mingw64c" --disable-sandboxing