diff --git a/packages/sha/sha.1.10/opam b/packages/sha/sha.1.10/opam
index 153ea6b5cab9..fec04a6b8f0a 100644
--- a/packages/sha/sha.1.10/opam
+++ b/packages/sha/sha.1.10/opam
@@ -15,7 +15,7 @@ install: [make "install"]
 remove: [["ocamlfind" "remove" "sha"]]
 
 depends: [
-  "ocaml" {>= "4.02.0"}
+  "ocaml" {>= "4.02.0" & < "5.0"}
   "ocamlfind"
 ]
 synopsis: "Binding to the SHA cryptographic functions"
diff --git a/packages/sha/sha.1.11/opam b/packages/sha/sha.1.11/opam
index c648bc044858..f318872aa376 100644
--- a/packages/sha/sha.1.11/opam
+++ b/packages/sha/sha.1.11/opam
@@ -15,7 +15,7 @@ install: [make "install"]
 remove: [["ocamlfind" "remove" "sha"]]
 
 depends: [
-  "ocaml" {>= "4.02.0"}
+  "ocaml" {>= "4.02.0" & < "5.0"}
   "ocamlfind"
 ]
 synopsis: "Binding to the SHA cryptographic functions"
diff --git a/packages/sha/sha.1.12/opam b/packages/sha/sha.1.12/opam
index 193840375925..cddc8dcc15d6 100644
--- a/packages/sha/sha.1.12/opam
+++ b/packages/sha/sha.1.12/opam
@@ -15,7 +15,7 @@ build: [
   ["jbuilder" "runtest" "-p" name] {with-test}
 ]
 depends: [
-  "ocaml" {>= "4.02.0"}
+  "ocaml" {>= "4.02.0" & < "5.0"}
   "jbuilder" {>= "1.0+beta13"}
   "ounit" {with-test}
 ]
diff --git a/packages/sha/sha.1.15.1/opam b/packages/sha/sha.1.15.1/opam
index c5a3bc5cea92..57b393b27982 100644
--- a/packages/sha/sha.1.15.1/opam
+++ b/packages/sha/sha.1.15.1/opam
@@ -26,7 +26,7 @@ homepage: "https://github.com/djs55/ocaml-sha"
 bug-reports: "https://github.com/djs55/ocaml-sha/issues"
 depends: [
   "dune" {>= "2.9"}
-  "ocaml" {>= "4.02"}
+  "ocaml" {>= "4.02" & < "5.0"}
   "stdlib-shims" {>= "0.3.0"}
   "ounit2" {with-test}
   "odoc" {with-doc}