diff --git a/packages/parsexp/parsexp.v0.11.0/opam b/packages/parsexp/parsexp.v0.11.0/opam
index 96f519e452f..f3523c86e5b 100644
--- a/packages/parsexp/parsexp.v0.11.0/opam
+++ b/packages/parsexp/parsexp.v0.11.0/opam
@@ -9,7 +9,7 @@ build: [
   ["jbuilder" "build" "-p" name "-j" jobs]
 ]
 depends: [
-  "ocaml" {>= "4.04.1"}
+  "ocaml" {>= "4.04.1" & < "4.13"}
   "sexplib0" {>= "v0.11" & < "v0.12"}
   "jbuilder" {>= "1.0+beta18.1"}
 ]