diff --git a/dune-project b/dune-project
index 410059d..bd37b9e 100644
--- a/dune-project
+++ b/dune-project
@@ -25,7 +25,9 @@
  (depends
   (dune :build)
   (core
-   (>= v0.15))
+   (and
+    (>= v0.15)
+    (< v0.16)))
   bignum
   (tezos-micheline
    (>= 7.0))
diff --git a/michelson-adt.opam b/michelson-adt.opam
index 726f4c0..f2ffb6c 100644
--- a/michelson-adt.opam
+++ b/michelson-adt.opam
@@ -10,7 +10,7 @@ homepage: "https://github.com/joaosreis/michelson-adt"
 bug-reports: "https://github.com/joaosreis/michelson-adt/issues"
 depends: [
   "dune" {>= "2.7" & build}
-  "core" {>= "v0.15"}
+  "core" {>= "v0.15" & < "v0.16"}
   "bignum"
   "tezos-micheline" {>= "7.0"}
   "ppx_deriving"