diff --git a/dune-project b/dune-project
index 639d267..4400621 100644
--- a/dune-project
+++ b/dune-project
@@ -24,7 +24,7 @@
  (depopts
   (lwt (>= 5.3.0))
   (base64 (>= 3.2.0))
-  (js_of_ocaml-tyxml (>= 3.4.0))))
+  (js_of_ocaml-tyxml (>= 5.5.0))))
 
 (package
  (name ezjs_amcharts3)
@@ -40,7 +40,7 @@
 (package
  (name ezjs_disqus)
  (synopsis "Binding for Disqus")
- (depends (js_of_ocaml-ppx (>= 3.4.0))))
+ (depends (js_of_ocaml-ppx (>= 5.5.0))))
 
 (package
  (name ezjs_gauth)
diff --git a/ezjs_disqus.opam b/ezjs_disqus.opam
index a9faae3..b3c4b92 100644
--- a/ezjs_disqus.opam
+++ b/ezjs_disqus.opam
@@ -15,7 +15,7 @@ doc: "https://ocamlpro.github.io/ezjs/doc"
 bug-reports: "https://github.com/ocamlpro/ezjs/issues"
 depends: [
   "dune" {>= "2.5"}
-  "js_of_ocaml-ppx" {>= "3.4.0"}
+  "js_of_ocaml-ppx" {>= "5.5.0"}
 ]
 build: [
   ["dune" "subst"] {pinned}
diff --git a/ezjs_utils.opam b/ezjs_utils.opam
index 47be9ab..10a5b84 100644
--- a/ezjs_utils.opam
+++ b/ezjs_utils.opam
@@ -21,7 +21,7 @@ depends: [
 depopts: [
   "lwt" {>= "5.3.0"}
   "base64" {>= "3.2.0"}
-  "js_of_ocaml-tyxml" {>= "3.4.0"}
+  "js_of_ocaml-tyxml" {>= "5.5.0"}
 ]
 build: [
   ["dune" "subst"] {pinned}