diff --git a/dune-project b/dune-project
index 0cf29a4..b779946 100644
--- a/dune-project
+++ b/dune-project
@@ -22,10 +22,9 @@
     angstrom-unix
     (biocaml (>= 0.8.0))
     (core (>= v0.14.0))
-    (dune (>= 1.11))
+    (dune (>= 2.7.0))
     gsl
     (lacaml (>= 10.0.2))
     menhir
-    (ocaml-r (>= 0.2.0))
     ppx_deriving
     printbox))
diff --git a/phylogenetics.opam b/phylogenetics.opam
index 64e2bd7..a5da058 100644
--- a/phylogenetics.opam
+++ b/phylogenetics.opam
@@ -12,11 +12,10 @@ depends: [
   "angstrom-unix"
   "biocaml" {>= "0.8.0"}
   "core" {>= "v0.14.0"}
-  "dune" {>= "1.11"}
+  "dune" {>= "2.7.0"}
   "gsl"
   "lacaml" {>= "10.0.2"}
   "menhir"
-  "ocaml-r" {>= "0.2.0"}
   "ppx_deriving"
   "printbox"
 ]