diff --git a/arch.sh b/arch.sh
index e89e5b9..01f3817 100644
--- a/arch.sh
+++ b/arch.sh
@@ -353,6 +353,15 @@ then
     # Add PIP packages from Python to the path
     fish_add_path /home/anri/.local/bin
 
+    # === OCaml ==
+    # Init Opam
+    echo | opam init
+    yes | opam init
+    # Install devtools
+    opam install ocaml-lsp-server --yes
+    opam install ocamlformat --yes
+    opam install ocamlformat-rpc --yes
+
     echo -e "\nInstallation terminée.\nIl faut redémarrer l'ordinateur."
 else
     echo "Ce script ne fonctionne que sur Arch."
diff --git a/archinstall/user_configuration.json b/archinstall/user_configuration.json
index c9f88ff..d8609ee 100644
--- a/archinstall/user_configuration.json
+++ b/archinstall/user_configuration.json
@@ -106,7 +106,8 @@
         "python-pip",
         "bluez-utils",
         "vlc",
-        "discord"
+        "discord",
+        "opam"
     ],
     "plugin": null,
     "profile": {