diff --git a/dune-project b/dune-project
index 891800e88..89c5761ba 100644
--- a/dune-project
+++ b/dune-project
@@ -32,7 +32,7 @@
  (synopsis "Toolchain to produce JS from Reason/OCaml")
  (depends
   (ocaml
-   (>= "5.2"))
+   (>= "5.3"))
   (cmdliner
    (>= "1.1.0"))
   dune-build-info
diff --git a/melange.opam b/melange.opam
index 8b313dec9..e7c61fc9e 100644
--- a/melange.opam
+++ b/melange.opam
@@ -8,7 +8,7 @@ homepage: "https://github.com/melange-re/melange"
 bug-reports: "https://github.com/melange-re/melange/issues"
 depends: [
   "dune" {>= "3.13"}
-  "ocaml" {>= "5.2"}
+  "ocaml" {>= "5.3"}
   "cmdliner" {>= "1.1.0"}
   "dune-build-info"
   "cppo" {build}
@@ -36,7 +36,5 @@ build: [
 ]
 dev-repo: "git+https://github.com/melange-re/melange.git"
 pin-depends: [
-  [ "reason.dev" "git+https://github.com/reasonml/reason.git#anmonteiro/ocaml-5.3" ]
-  [ "merlin-extend.dev" "git+https://github.com/anmonteiro/merlin-extend.git#anmonteiro/ocaml-5.3" ]
-  [ "utop.dev" "git+https://github.com/anmonteiro/utop.git#anmonteiro/ocaml-5.3" ]
+  [ "reason.dev" "git+https://github.com/reasonml/reason.git" ]
 ]
diff --git a/melange.opam.template b/melange.opam.template
index 54838a14c..b521fec90 100644
--- a/melange.opam.template
+++ b/melange.opam.template
@@ -1,5 +1,3 @@
 pin-depends: [
-  [ "reason.dev" "git+https://github.com/reasonml/reason.git#anmonteiro/ocaml-5.3" ]
-  [ "merlin-extend.dev" "git+https://github.com/anmonteiro/merlin-extend.git#anmonteiro/ocaml-5.3" ]
-  [ "utop.dev" "git+https://github.com/anmonteiro/utop.git#anmonteiro/ocaml-5.3" ]
+  [ "reason.dev" "git+https://github.com/reasonml/reason.git" ]
 ]