diff --git a/src/lib_stdlib/tezos-stdlib.opam b/src/lib_stdlib/tezos-stdlib.opam
index 7dc33f564..0b7e4cba6 100644
--- a/src/lib_stdlib/tezos-stdlib.opam
+++ b/src/lib_stdlib/tezos-stdlib.opam
@@ -12,7 +12,7 @@ depends: [
   "hex"
   "ocplib-endian"
   "re"
-  "lwt"
+  "lwt" { < "4" }
   "zarith"
   "alcotest" { with-test }
   "ocp-indent" { with-test & = "1.6.1" }