diff --git a/arch.sh b/arch.sh
index ceccb0e..bf4a2b2 100644
--- a/arch.sh
+++ b/arch.sh
@@ -374,7 +374,7 @@ main() {
   fish -c "yes | opam init"
   opam install -y \
     utop ocaml-lsp-server ocamlformat ocamlformat-rpc menhir pprint sexplib \
-    ppx_sexp_conv
+    ppx_sexp_conv cohttp-lwt-unix dotenv twostep lwt_ssl core
   wget -q ${repo}/dotfiles/.ocamlformat -O "$HOME"/.ocamlformat
   # Add Opam packages from OCaml
   mkdir -p "$HOME"/.opam/default/bin
diff --git a/arch_wsl.sh b/arch_wsl.sh
index 26654e6..026bc1c 100644
--- a/arch_wsl.sh
+++ b/arch_wsl.sh
@@ -179,7 +179,7 @@ main() {
   fish -c "yes | opam init"
   opam install -y \
     utop ocaml-lsp-server ocamlformat ocamlformat-rpc menhir pprint sexplib \
-    ppx_sexp_conv
+    ppx_sexp_conv cohttp-lwt-unix dotenv twostep lwt_ssl core
   wget -q ${repo}/dotfiles/.ocamlformat -O "$HOME"/.ocamlformat
   # Add Opam packages from OCaml
   mkdir -p "$HOME"/.opam/default/bin