diff --git a/src/ligo/ligo.opam b/src/ligo/ligo.opam
index 1797dad77..9294b375f 100644
--- a/src/ligo/ligo.opam
+++ b/src/ligo/ligo.opam
@@ -13,6 +13,7 @@ depends: [
   "dune" { build & >= "1.0.1" }
   "menhir"
   "ppx_let"
+  "ppx_deriving"
   "tezos-utils"
   "yojson"
   "alcotest" { with-test }