diff --git a/binaryen.opam b/binaryen.opam
index 091fe24e..d4dd2198 100644
--- a/binaryen.opam
+++ b/binaryen.opam
@@ -8,7 +8,7 @@ homepage: "https://github.com/grain-lang/binaryen.ml"
 dev-repo: "git+https://github.com/grain-lang/binaryen.ml.git"
 bug-reports: "https://github.com/grain-lang/binaryen.ml/issues"
 build: [
-  [ "dune" "subst" ] {pinned}
+  [ "dune" "subst" ] {dev}
   [ "dune" "build" "-p" name "-j" jobs ]
 ]
 depends: [