diff --git a/packages/ocamlfind/ocamlfind.1.9.0/opam b/packages/ocamlfind/ocamlfind.1.9.0/opam
index 7321fc90f52..f9eec04104b 100644
--- a/packages/ocamlfind/ocamlfind.1.9.0/opam
+++ b/packages/ocamlfind/ocamlfind.1.9.0/opam
@@ -11,7 +11,7 @@ authors: "Gerd Stolpmann <gerd@gerd-stolpmann.de>"
 homepage: "http://projects.camlcity.org/projects/findlib.html"
 bug-reports: "https://gitlab.camlcity.org/gerd/lib-findlib/issues"
 depends: [
-  "ocaml" {>= "4.00.0"}
+  "ocaml" {>= "4.00.0" & < "5.0"}
 ]
 depopts: ["graphics"]
 patches: ["fix-bsd.patch"]
diff --git a/packages/ocamlfind/ocamlfind.1.9.1/opam b/packages/ocamlfind/ocamlfind.1.9.1/opam
index 4b6e5c6f615..df2b06e3dd6 100644
--- a/packages/ocamlfind/ocamlfind.1.9.1/opam
+++ b/packages/ocamlfind/ocamlfind.1.9.1/opam
@@ -13,7 +13,7 @@ authors: "Gerd Stolpmann <gerd@gerd-stolpmann.de>"
 homepage: "http://projects.camlcity.org/projects/findlib.html"
 bug-reports: "https://github.com/ocaml/ocamlfind/issues"
 depends: [
-  "ocaml" {>= "4.00.0"}
+  "ocaml" {>= "4.00.0" & < "5.0"}
 ]
 depopts: ["graphics"]
 build: [
diff --git a/packages/ocamlfind/ocamlfind.1.9.2/opam b/packages/ocamlfind/ocamlfind.1.9.2/opam
index a4cc0bdfeed..4c0e46df170 100644
--- a/packages/ocamlfind/ocamlfind.1.9.2/opam
+++ b/packages/ocamlfind/ocamlfind.1.9.2/opam
@@ -13,7 +13,7 @@ authors: "Gerd Stolpmann <gerd@gerd-stolpmann.de>"
 homepage: "http://projects.camlcity.org/projects/findlib.html"
 bug-reports: "https://github.com/ocaml/ocamlfind/issues"
 depends: [
-  "ocaml" {>= "4.00.0"}
+  "ocaml" {>= "4.00.0" & < "5.0"}
 ]
 depopts: ["graphics"]
 build: [
diff --git a/packages/ocamlfind/ocamlfind.1.9.3/opam b/packages/ocamlfind/ocamlfind.1.9.3/opam
index 971a203f1a8..d734d63b033 100644
--- a/packages/ocamlfind/ocamlfind.1.9.3/opam
+++ b/packages/ocamlfind/ocamlfind.1.9.3/opam
@@ -13,7 +13,7 @@ authors: "Gerd Stolpmann <gerd@gerd-stolpmann.de>"
 homepage: "http://projects.camlcity.org/projects/findlib.html"
 bug-reports: "https://github.com/ocaml/ocamlfind/issues"
 depends: [
-  "ocaml" {>= "4.00.0"}
+  "ocaml" {>= "4.00.0" & < "5.0"}
 ]
 depopts: ["graphics"]
 build: [