diff --git a/srcpkgs/ocaml-num/template b/srcpkgs/ocaml-num/template
index 72c9bace0d0..f2e6c90c3d6 100644
--- a/srcpkgs/ocaml-num/template
+++ b/srcpkgs/ocaml-num/template
@@ -1,23 +1,21 @@
 # Template file for 'ocaml-num'
 pkgname=ocaml-num
-version=1.4
-revision=4
-build_style=gnu-makefile
-make_install_target="findlib-install"
-makedepends="ocaml ocaml-findlib"
+version=1.5
+revision=1
+makedepends="ocaml dune"
 short_desc="OCaml legacy Num library for arbitrary-precision integers"
 maintainer="Leah Neukirchen <leah@vuxu.org>"
 license="custom: LGPL-2.1-only with OCaml-LGPL-linking-exception"
 homepage="https://github.com/ocaml/num"
 distfiles="https://github.com/ocaml/num/archive/v${version}.tar.gz"
-checksum=015088b68e717b04c07997920e33c53219711dfaf36d1196d02313f48ea00f24
+checksum=7ae07c8f5601e2dfc5008a62dcaf2719912ae596a19365c5d7bdf2230515959a
 nocross=yes
 
-pre_install() {
-	export OCAMLFIND_DESTDIR=${DESTDIR}/usr/lib/ocaml
-	vmkdir /usr/lib/ocaml/stublibs
+do_build() {
+	dune build --display=short
 }
-
-post_install() {
+do_install() {
+	dune install --prefix=/usr --destdir="$DESTDIR" \
+		--libdir=/usr/lib/ocaml --docdir=/usr/share/doc
 	vlicense LICENSE
 }