diff --git a/ocaml-solo5-cross-aarch64.opam b/ocaml-solo5-cross-aarch64.opam
index f58f85d2..c2b79aca 100644
--- a/ocaml-solo5-cross-aarch64.opam
+++ b/ocaml-solo5-cross-aarch64.opam
@@ -21,7 +21,7 @@ depends: [
   "conf-which" {build}
   "ocamlfind" {build} # needed by dune context (for tests)
   "ocaml-src" {build}
-  "ocaml" {>= "4.12.1" & < "4.15.0"}
+  "ocaml" {>= "5.0" & < "5.1"}
   "solo5" {>= "0.7.0"}
   "solo5-cross-aarch64" {>= "0.7.0" }
 ]
diff --git a/ocaml-solo5.opam b/ocaml-solo5.opam
index 3df9e566..c0b3d7ff 100644
--- a/ocaml-solo5.opam
+++ b/ocaml-solo5.opam
@@ -22,7 +22,7 @@ depends: [
   "conf-which" {build}
   "ocamlfind" {build} # needed by dune context (for tests)
   "ocaml-src" {build}
-  "ocaml" {>= "4.12.1" & < "4.15.0"}
+  "ocaml" {>= "5.0" & < "5.1"}
   "solo5" {>= "0.7.0"}
 ]
 conflicts: [