diff --git a/dune-project b/dune-project
index f03b3d64..b2edce15 100644
--- a/dune-project
+++ b/dune-project
@@ -94,7 +94,7 @@
  (name opentelemetry-client-ocurl)
  (depends
   (ocaml
-   (>= "4.08"))
+   (>= "4.11"))
   (mtime
    (>= "1.4"))
   ; for spans
@@ -106,7 +106,7 @@
   (odoc :with-doc)
   (ezcurl
    (>= 0.2.3))
-  ocurl
+  curl
   (alcotest :with-test)
   (cohttp-lwt-unix :with-test)
   (containers :with-test)
@@ -117,7 +117,7 @@
  (name opentelemetry-client-ocurl-lwt)
  (depends
   (ocaml
-   (>= "4.08"))
+   (>= "4.11"))
   (mtime
    (>= "1.4"))
   (opentelemetry
diff --git a/opentelemetry-client-ocurl-lwt.opam b/opentelemetry-client-ocurl-lwt.opam
index c8027920..324d1032 100644
--- a/opentelemetry-client-ocurl-lwt.opam
+++ b/opentelemetry-client-ocurl-lwt.opam
@@ -9,7 +9,7 @@ homepage: "https://github.com/ocaml-tracing/ocaml-opentelemetry"
 bug-reports: "https://github.com/ocaml-tracing/ocaml-opentelemetry/issues"
 depends: [
   "dune" {>= "3.11"}
-  "ocaml" {>= "4.08"}
+  "ocaml" {>= "4.11"}
   "mtime" {>= "1.4"}
   "opentelemetry" {= version}
   "opentelemetry-client" {= version}
diff --git a/opentelemetry-client-ocurl.opam b/opentelemetry-client-ocurl.opam
index 5592cbbb..137d1896 100644
--- a/opentelemetry-client-ocurl.opam
+++ b/opentelemetry-client-ocurl.opam
@@ -9,13 +9,13 @@ homepage: "https://github.com/ocaml-tracing/ocaml-opentelemetry"
 bug-reports: "https://github.com/ocaml-tracing/ocaml-opentelemetry/issues"
 depends: [
   "dune" {>= "3.11"}
-  "ocaml" {>= "4.08"}
+  "ocaml" {>= "4.11"}
   "mtime" {>= "1.4"}
   "opentelemetry" {= version}
   "opentelemetry-client" {= version}
   "odoc" {with-doc}
   "ezcurl" {>= "0.2.3"}
-  "ocurl"
+  "curl"
   "alcotest" {with-test}
   "cohttp-lwt-unix" {with-test}
   "containers" {with-test}