diff --git a/dune-project b/dune-project
index 1a6d448f..93d60bb3 100644
--- a/dune-project
+++ b/dune-project
@@ -1,4 +1,4 @@
-(lang dune 2.3)
+(lang dune 2.7)
 (name opentelemetry)
 (generate_opam_files true)
 (source
@@ -16,7 +16,6 @@
  (synopsis "Instrumentation for https://opentelemetry.io")
  (depends
    (ocaml (>= "4.08"))
-   (dune (>= "2.3"))
    ptime
    (odoc :with-doc)
    (ocaml-protoc (>= 2.1)))
@@ -28,7 +27,6 @@
  (synopsis "Lwt-compatible instrumentation for https://opentelemetry.io")
  (depends
    (ocaml (>= "4.08"))
-   (dune (>= "2.3"))
    (opentelemetry (= :version))
    (odoc :with-doc)
    lwt)
@@ -39,7 +37,6 @@
   (name opentelemetry-client-ocurl)
   (depends
    (ocaml (>= "4.08"))
-   (dune (>= "2.3"))
    (mtime (>= "1.4")) ; for spans
    ; atomic ; vendored
    (opentelemetry (= :version))
@@ -52,7 +49,6 @@
  (name opentelemetry-cohttp-lwt)
  (depends
   (ocaml (>= "4.08"))
-  (dune (>= "2.3"))
   (opentelemetry (= :version))
   (opentelemetry-lwt (= :version))
   (odoc :with-doc)
diff --git a/opentelemetry-client-ocurl.opam b/opentelemetry-client-ocurl.opam
index 9b882f13..f65d64ee 100644
--- a/opentelemetry-client-ocurl.opam
+++ b/opentelemetry-client-ocurl.opam
@@ -9,8 +9,8 @@ homepage: "https://github.com/aestheticintegration/ocaml-opentelemetry"
 bug-reports:
   "https://github.com/aestheticintegration/ocaml-opentelemetry/issues"
 depends: [
+  "dune" {>= "2.7"}
   "ocaml" {>= "4.08"}
-  "dune" {>= "2.3"}
   "mtime" {>= "1.4"}
   "opentelemetry" {= version}
   "ocaml-protoc" {>= "2.1"}
@@ -18,7 +18,7 @@ depends: [
   "ocurl"
 ]
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   [
     "dune"
     "build"
diff --git a/opentelemetry-cohttp-lwt.opam b/opentelemetry-cohttp-lwt.opam
index 7b6a9b5e..dc0f0af4 100644
--- a/opentelemetry-cohttp-lwt.opam
+++ b/opentelemetry-cohttp-lwt.opam
@@ -9,15 +9,15 @@ homepage: "https://github.com/aestheticintegration/ocaml-opentelemetry"
 bug-reports:
   "https://github.com/aestheticintegration/ocaml-opentelemetry/issues"
 depends: [
+  "dune" {>= "2.7"}
   "ocaml" {>= "4.08"}
-  "dune" {>= "2.3"}
   "opentelemetry" {= version}
   "opentelemetry-lwt" {= version}
   "odoc" {with-doc}
   "cohttp-lwt"
 ]
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   [
     "dune"
     "build"
diff --git a/opentelemetry-lwt.opam b/opentelemetry-lwt.opam
index efdf941f..207d329b 100644
--- a/opentelemetry-lwt.opam
+++ b/opentelemetry-lwt.opam
@@ -10,14 +10,14 @@ homepage: "https://github.com/aestheticintegration/ocaml-opentelemetry"
 bug-reports:
   "https://github.com/aestheticintegration/ocaml-opentelemetry/issues"
 depends: [
+  "dune" {>= "2.7"}
   "ocaml" {>= "4.08"}
-  "dune" {>= "2.3"}
   "opentelemetry" {= version}
   "odoc" {with-doc}
   "lwt"
 ]
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   [
     "dune"
     "build"
diff --git a/opentelemetry.opam b/opentelemetry.opam
index bf86cc1f..f02508d8 100644
--- a/opentelemetry.opam
+++ b/opentelemetry.opam
@@ -10,14 +10,14 @@ homepage: "https://github.com/aestheticintegration/ocaml-opentelemetry"
 bug-reports:
   "https://github.com/aestheticintegration/ocaml-opentelemetry/issues"
 depends: [
+  "dune" {>= "2.7"}
   "ocaml" {>= "4.08"}
-  "dune" {>= "2.3"}
   "ptime"
   "odoc" {with-doc}
   "ocaml-protoc" {>= "2.1"}
 ]
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   [
     "dune"
     "build"