diff --git a/dune-project b/dune-project
index e8351e30..b4617e51 100644
--- a/dune-project
+++ b/dune-project
@@ -27,7 +27,13 @@
   ambient-context
   (odoc :with-doc)
   (pbrt
-   (>= 2.3)))
+   (>= 2.3))
+  (ocaml-lsp-server :with-dev-setup)
+  (ocamlformat
+   (and
+    :with-dev-setup
+    (>= 0.24)
+    (< 0.25))))
  (depopts
   (trace
    (>= 0.1)))
diff --git a/opentelemetry.opam b/opentelemetry.opam
index e13b4a10..0e81945c 100644
--- a/opentelemetry.opam
+++ b/opentelemetry.opam
@@ -15,6 +15,8 @@ depends: [
   "ambient-context"
   "odoc" {with-doc}
   "pbrt" {>= "2.3"}
+  "ocaml-lsp-server" {with-dev-setup}
+  "ocamlformat" {with-dev-setup & >= "0.24" & < "0.25"}
 ]
 depopts: [
   "trace" {>= "0.1"}