diff --git a/packages/gen_js_api/gen_js_api.1.1.0/opam b/packages/gen_js_api/gen_js_api.1.1.0/opam
index 49577d3f9f26..49e8453b0d43 100644
--- a/packages/gen_js_api/gen_js_api.1.1.0/opam
+++ b/packages/gen_js_api/gen_js_api.1.1.0/opam
@@ -23,7 +23,7 @@ depends: [
   "ocaml" {>= "4.08"}
   "ppxlib" {>= "0.22" & < "0.36"} | ("ocaml" {< "5.3"} & "ppxlib" {>= "0.36"})
   "ppxlib" {with-test & < "0.26.0"}
-  "js_of_ocaml-compiler" {with-test}
+  "js_of_ocaml-compiler" {with-test & < "6.0"}
   "conf-npm" {with-test}
   "ojs" {= "1.1.0"}
   "odoc" {with-doc}
diff --git a/packages/gen_js_api/gen_js_api.1.1.1/opam b/packages/gen_js_api/gen_js_api.1.1.1/opam
index 389cb6ac1775..b2510168b80d 100644
--- a/packages/gen_js_api/gen_js_api.1.1.1/opam
+++ b/packages/gen_js_api/gen_js_api.1.1.1/opam
@@ -22,7 +22,7 @@ depends: [
   "dune" {>= "2.7"}
   "ocaml" {>= "4.08"}
   "ppxlib" {>= "0.26" & < "0.36"} | ("ocaml" {< "5.3"} & "ppxlib" {>= "0.36"})
-  "js_of_ocaml-compiler" {with-test}
+  "js_of_ocaml-compiler" {with-test & < "6.0"}
   "conf-npm" {with-test}
   "ojs" {= "1.1.1"}
   "odoc" {with-doc}
diff --git a/packages/gen_js_api/gen_js_api.1.1.2/opam b/packages/gen_js_api/gen_js_api.1.1.2/opam
index 83a4f08cac12..bfd020fa9b28 100644
--- a/packages/gen_js_api/gen_js_api.1.1.2/opam
+++ b/packages/gen_js_api/gen_js_api.1.1.2/opam
@@ -22,7 +22,7 @@ depends: [
   "dune" {>= "2.7"}
   "ocaml" {>= "4.08"}
   "ppxlib" {>= "0.26" & < "0.36"} | ("ocaml" {< "5.3"} & "ppxlib" {>= "0.36"})
-  "js_of_ocaml-compiler" {with-test}
+  "js_of_ocaml-compiler" {with-test & < "6.0"}
   "conf-npm" {with-test}
   "ojs" {= version}
   "odoc" {with-doc}
diff --git a/packages/gen_js_api/gen_js_api.1.1.3/opam b/packages/gen_js_api/gen_js_api.1.1.3/opam
index 12cf47ca3332..33362efbf67e 100644
--- a/packages/gen_js_api/gen_js_api.1.1.3/opam
+++ b/packages/gen_js_api/gen_js_api.1.1.3/opam
@@ -22,7 +22,7 @@ depends: [
   "dune" {>= "2.7"}
   "ocaml" {>= "4.08"}
   "ppxlib" {>= "0.26" & < "0.36"} | ("ocaml" {< "5.3"} & "ppxlib" {>= "0.36"})
-  "js_of_ocaml-compiler" {with-test}
+  "js_of_ocaml-compiler" {with-test & < "6.0"}
   "conf-npm" {with-test}
   "ojs" {= version}
   "odoc" {with-doc}
diff --git a/packages/gen_js_api/gen_js_api.1.1.4/opam b/packages/gen_js_api/gen_js_api.1.1.4/opam
index 7f427d2f45bb..49e941ba3daa 100644
--- a/packages/gen_js_api/gen_js_api.1.1.4/opam
+++ b/packages/gen_js_api/gen_js_api.1.1.4/opam
@@ -22,7 +22,7 @@ depends: [
   "dune" {>= "3.0"}
   "ocaml" {>= "4.08"}
   "ppxlib" {>= "0.26" & < "0.36"} | ("ocaml" {< "5.3"} & "ppxlib" {>= "0.36"})
-  "js_of_ocaml-compiler" {with-test}
+  "js_of_ocaml-compiler" {with-test & < "6.0"}
   "ojs" {= version}
   "odoc" {with-doc}
 ]
diff --git a/packages/gen_js_api/gen_js_api.1.1.5/opam b/packages/gen_js_api/gen_js_api.1.1.5/opam
index 7cb4f0f3486d..3e14b089bc5c 100644
--- a/packages/gen_js_api/gen_js_api.1.1.5/opam
+++ b/packages/gen_js_api/gen_js_api.1.1.5/opam
@@ -22,7 +22,7 @@ depends: [
   "dune" {>= "3.0"}
   "ocaml" {>= "4.08"}
   "ppxlib" {>= "0.26"}
-  "js_of_ocaml-compiler" {with-test}
+  "js_of_ocaml-compiler" {with-test & < "6.0"}
   "ojs" {= version}
   "odoc" {with-doc}
 ]