diff --git a/nix/base-system/.zshrc b/nix/base-system/.zshrc
index fffff04..153214f 100644
--- a/nix/base-system/.zshrc
+++ b/nix/base-system/.zshrc
@@ -1,2 +1,5 @@
 export PROMPT='%F{green}[%T] %F{cyan}(%n@%m) %F{lightgrey}(%y) %F{cyan} %~
 %F{white}%(!.>>.$>) '
+
+# Opam configurattion
+[[ ! -r ~/.opam/opam-init/init.zsh ]] || source ~/.opam/opam-init/init.zsh  > /dev/null 2> /dev/null
diff --git a/nix/base-system/flake.nix b/nix/base-system/flake.nix
index 52d46f4..7330d29 100644
--- a/nix/base-system/flake.nix
+++ b/nix/base-system/flake.nix
@@ -150,10 +150,10 @@
             datasette
             ocaml
             opam
-            dune-release
             # TODO add sonic-pi here if it supports the arch
         ]) ++ (with ocamlPackages; [
             lsp
+            dune_3
         ]) ++ [
             sile
             runwhen