diff --git a/packages/tidy_email_sendgrid/tidy_email_sendgrid.0.0.1/opam b/packages/tidy_email_sendgrid/tidy_email_sendgrid.0.0.1/opam
index 6d0f98085e8..6c01e100c59 100644
--- a/packages/tidy_email_sendgrid/tidy_email_sendgrid.0.0.1/opam
+++ b/packages/tidy_email_sendgrid/tidy_email_sendgrid.0.0.1/opam
@@ -13,7 +13,7 @@ depends: [
   "cmdliner" {>= "1.0.4" & with-test}
   "dune" {>= "2.8" & >= "2.0"}
   "ocaml" {>= "4.11.0"}
-  "cohttp" {>= "2.5.5"}
+  "cohttp" {>= "2.5.5" & < "6.0~~"}
   "cohttp-lwt-unix" {>= "2.5.5"}
   "lwt_ppx" {>= "2.0.0"}
   "yojson" {>= "1.7.0"}