diff --git a/dune-project b/dune-project
index e37df57d..fbeb92d8 100644
--- a/dune-project
+++ b/dune-project
@@ -55,7 +55,8 @@
  (synopsis "React.js JSX PPX")
  (description "ReasonReact JSX PPX")
  (depends
-  ocaml
+  (ocaml
+   (>= 4.14))
   (reason
    (>= 3.12.0))
   (ppxlib
diff --git a/reason-react-ppx.opam b/reason-react-ppx.opam
index 944c8fdb..e9f16813 100644
--- a/reason-react-ppx.opam
+++ b/reason-react-ppx.opam
@@ -15,7 +15,7 @@ doc: "https://reasonml.github.io/reason-react"
 bug-reports: "https://github.com/reasonml/reason-react/issues"
 depends: [
   "dune" {>= "3.9"}
-  "ocaml"
+  "ocaml" {>= "4.14"}
   "reason" {>= "3.12.0"}
   "ppxlib" {>= "0.33.0"}
   "merlin" {with-test}