diff --git a/Makefile b/Makefile
index 9d6511116..d22335670 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,8 @@
 INSTALL_ARGS := $(if $(PREFIX),--prefix $(PREFIX),)
-NAME := ppx_let
 
 # Default rule
 default:
-	jbuilder build-package $(NAME)
+	jbuilder build @install
 
 install:
 	jbuilder install $(INSTALL_ARGS)
diff --git a/ppx_let.opam b/ppx_let.opam
index 5328321e2..f4f48e5a6 100644
--- a/ppx_let.opam
+++ b/ppx_let.opam
@@ -6,7 +6,7 @@ bug-reports: "https://github.com/janestreet/ppx_let/issues"
 dev-repo: "https://github.com/janestreet/ppx_let.git"
 license: "Apache-2.0"
 build: [
-  ["jbuilder" "build-package" "ppx_let" "-j" jobs]
+  ["jbuilder" "build" "--only-packages" "ppx_let" "--root" "." "-j" jobs]
 ]
 depends: [
   "jbuilder"