diff --git a/asli.opam b/asli.opam
index f79b928e..c458f186 100644
--- a/asli.opam
+++ b/asli.opam
@@ -29,6 +29,7 @@ depends: [
   "dune-site"
   "lwt"
   "cohttp-lwt-unix"
+  "yojson"
   "odoc" {with-doc}
 ]
 build: [
diff --git a/dune-project b/dune-project
index 5a0a3520..a8ec66bf 100644
--- a/dune-project
+++ b/dune-project
@@ -28,6 +28,7 @@
     "dune-site"
     "lwt"
     "cohttp-lwt-unix"
+    "yojson"
   )
   (sites (share aslfiles))
 )