diff --git a/packages/owl-base/owl-base.1.2/opam b/packages/owl-base/owl-base.1.2/opam
index dd464933c0a..e7bff2a6986 100644
--- a/packages/owl-base/owl-base.1.2/opam
+++ b/packages/owl-base/owl-base.1.2/opam
@@ -9,7 +9,7 @@ doc: "https://owlbarn.github.io/"
 synopsis: "OCaml Scientific and Engineering Computing - Base"
 description: "Owl is an OCaml scientific library."
 build: [
-  [ "dune" "subst" ] {pinned}
+  [ "dune" "subst" ] {dev}
   [ "dune" "build" "-p" name "-j" jobs ]
 ]