diff --git a/src/ligo/ligo.opam b/src/ligo/ligo.opam
index cd84e9626..bf16e3e7f 100644
--- a/src/ligo/ligo.opam
+++ b/src/ligo/ligo.opam
@@ -10,6 +10,7 @@ depends: [
   "ocamlfind" { build }
   "dune" { build & >= "1.0.1" }
   "menhir"
+  "ppx_let"
   "tezos-utils"
 ]
 build: [