diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index d2c45841..b947a19a 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -11,9 +11,6 @@ jobs:
       fail-fast: false
       matrix:
         ocaml-version:
-          - 4.00.1
-          - 4.01.0
-          - 4.02.3
           - 4.03.0
           - 4.04.2
           - 4.05.0
@@ -21,18 +18,23 @@ jobs:
           - 4.07.1
           - 4.08.1
           - 4.09.1
+          - 4.10.0
+          - 4.11.1
+          - 4.12.1
+          - 4.13.1
+          - 4.14.1
         required:
           - true
         os:
           - ubuntu-latest
         include:
-          - ocaml-version: 4.09.1
+          - ocaml-version: 4.14.1
             required: true
             os: macos-latest
-          - ocaml-version: 4.09.1
+          - ocaml-version: 4.14.1
             required: false
             os: windows-latest
-          - ocaml-version: 4.10.0
+          - ocaml-version: 5.2.0
             required: false
             os: ubuntu-latest
 
@@ -40,12 +42,12 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Use OCaml ${{ matrix.ocaml-version }}
-        uses: avsm/setup-ocaml@v1
+        uses: ocaml/setup-ocaml@v3
         with:
-          ocaml-version: ${{ matrix.ocaml-version }}
+          ocaml-compiler: ${{ matrix.ocaml-version }}
 
       - run: opam pin add mldonkey.dev . --no-action
 
@@ -56,3 +58,10 @@ jobs:
       - run: opam exec -- ./configure --enable-debug
 
       - run: opam exec -- make
+
+      - name: Upload the build artifact
+        uses: actions/upload-artifact@v4
+        with:
+          ocaml-compiler: 4.14.1
+          name: mlnet-${{ matrix.os }}.exe
+          path: mlnet
diff --git a/opam b/mldonkey.opam
similarity index 89%
rename from opam
rename to mldonkey.opam
index 396ad9fb..1e01332d 100644
--- a/opam
+++ b/mldonkey.opam
@@ -12,11 +12,11 @@ interfaces : telnet, web, and binary protocol for third party GUIs."""
 maintainer: "ygrek@autistici.org"
 authors: "mldonkey team"
 license: "GPL-2.0-only"
-homepage: "http://mldonkey.sourceforge.net/"
-dev-repo: "git+https://github.com/ygrek/mldonkey.git"
+homepage: "http://github.com/ygrek/mldonkey"
 bug-reports: "https://github.com/ygrek/mldonkey/issues"
+dev-repo: "git+https://github.com/ygrek/mldonkey.git"
 depends: [
-  "ocaml" {>= "4.00.0"}
+  "ocaml" {>= "4.03.0" & < "5.0"}
   "camlp4"
   "conf-zlib"
   "num"