diff --git a/ppx_let.opam b/ppx_let.opam
index f6e188581..2de221630 100644
--- a/ppx_let.opam
+++ b/ppx_let.opam
@@ -10,7 +10,7 @@ build: [
   ["dune" "build" "-p" name "-j" jobs]
 ]
 depends: [
-  "ocaml" {>= "4.04.2"}
+  "ocaml" {>= "4.04.2" & < "4.08.0"}
   "base"
   "dune"   {build & >= "1.5.1"}
   "ppxlib" {>= "0.5.0"}