diff --git a/_oasis b/_oasis
index 2f8bfc78b..f674e7e8d 100644
--- a/_oasis
+++ b/_oasis
@@ -2,7 +2,7 @@ OASISFormat:           0.4
 OCamlVersion:          >= 4.03.0
 FindlibVersion:        >= 1.3.2
 Name:                  ppx_let
-Version:               114.04+40
+Version:               114.04+57
 Synopsis:              Monadic let-bindings
 Authors:               Jane Street Group, LLC <opensource@janestreet.com>
 Copyrights:            (C) 2015-2016 Jane Street Group LLC <opensource@janestreet.com>
diff --git a/src/jbuild b/src/jbuild
new file mode 100644
index 000000000..cacfa4fb0
--- /dev/null
+++ b/src/jbuild
@@ -0,0 +1,7 @@
+(library
+ ((name ppx_let)
+  (public_name ppx_let)
+  (public_release ((kind ppx_rewriter)))
+  (wrapped false)
+  (libraries (ocamlcommon ppx_core ppx_driver))
+  (preprocess ((no_preprocessing All)))))
diff --git a/test/jbuild b/test/jbuild
new file mode 100644
index 000000000..94cb75834
--- /dev/null
+++ b/test/jbuild
@@ -0,0 +1,6 @@
+(executables
+ ((names (test))
+  (preprocess (((pps (ppx_let)) All)))))
+
+(toplevel_expect_tests
+ ((libraries (ppx_let))))