diff --git a/dune-project b/dune-project
index 1d96e928..1fa9a832 100644
--- a/dune-project
+++ b/dune-project
@@ -1,4 +1,4 @@
-(lang dune 1.11)
+(lang dune 2.3)
 (name ocaml-migrate-parsetree)
 (allow_approximate_merlin)
 (using cinaps 1.0)
diff --git a/ocaml-migrate-parsetree.opam b/ocaml-migrate-parsetree.opam
index 865d8763..43624651 100644
--- a/ocaml-migrate-parsetree.opam
+++ b/ocaml-migrate-parsetree.opam
@@ -13,7 +13,7 @@ tags: [ "syntax" "org:ocamllabs" ]
 build: ["dune" "build" "-p" name "-j" jobs]
 run-test: ["dune" "runtest" "-p" name "-j" jobs]
 depends: [
-  "dune" {>= "1.11"}
+  "dune" {>= "2.3"}
   "ocaml" {>= "4.02.3" & < "4.13"}
   "cinaps" {with-test}
 ]
diff --git a/tools/dune b/tools/dune
index 979bb710..4f6b8547 100644
--- a/tools/dune
+++ b/tools/dune
@@ -1,5 +1,20 @@
-(executables
- (names add_special_comments pp gencopy)
+(executable
+ (name pp)
+ (modules pp pp_rewrite)
+ (libraries compiler-libs.common compiler-libs.bytecomp)
+ (flags :standard -w -3))
+
+(executable
+ (name gencopy)
+ (enabled_if (>= %{ocaml_version} 4.10))
+ (modules gencopy)
+ (libraries compiler-libs.common compiler-libs.bytecomp)
+ (flags :standard -w -3))
+
+(executable
+ (name add_special_comments)
+ (enabled_if (>= %{ocaml_version} 4.10))
+ (modules add_special_comments)
  (libraries compiler-libs.common compiler-libs.bytecomp)
  (flags :standard -w -3))