diff --git a/CHANGES.md b/CHANGES.md
index a2a20b02bc..a98e1666fc 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,6 @@
 ## dev
 
+- support uri.3.0.0 that has optional sexp support (@avsm)
 - use re.1.9.0 api to remove deprecation warnings (#664 @vbmithr)
 
 ## v2.1.2 (2019-04-09)
diff --git a/cohttp-async.opam b/cohttp-async.opam
index 4946733c4f..a4fe6a6f80 100644
--- a/cohttp-async.opam
+++ b/cohttp-async.opam
@@ -39,6 +39,7 @@ depends: [
   "ppx_sexp_conv" {>= "v0.9.0"}
   "ounit" {with-test}
   "uri" {>= "2.0.0"}
+  "uri-sexp"
 ]
 build: [
   ["dune" "subst"] {pinned}
diff --git a/cohttp-async/src/dune b/cohttp-async/src/dune
index 2277370154..e772076216 100644
--- a/cohttp-async/src/dune
+++ b/cohttp-async/src/dune
@@ -3,5 +3,5 @@
   (synopsis    "Async backend")
   (public_name cohttp-async)
   (libraries   logs.fmt base fmt async_unix async_kernel async_extra uri
-               uri.services uri.sexp ipaddr.unix conduit-async magic-mime cohttp)
+               uri.services uri-sexp ipaddr.unix conduit-async magic-mime cohttp)
   (preprocess (pps ppx_sexp_conv)))
diff --git a/cohttp.opam b/cohttp.opam
index 371d3d0f50..0849b093c0 100644
--- a/cohttp.opam
+++ b/cohttp.opam
@@ -36,6 +36,7 @@ depends: [
   "dune" {build & >= "1.1.0"}
   "re" {>= "1.9.0"}
   "uri" {>= "2.0.0"}
+  "uri-sexp"
   "fieldslib"
   "sexplib0"
   "ppx_fields_conv" {>= "v0.9.0"}
diff --git a/cohttp/src/dune b/cohttp/src/dune
index a69db3d3a3..107da89505 100644
--- a/cohttp/src/dune
+++ b/cohttp/src/dune
@@ -10,7 +10,7 @@
  (public_name cohttp)
  (synopsis "Co-operative Client/Server HTTP library.")
  (preprocess (pps ppx_fields_conv ppx_sexp_conv))
- (libraries re stringext uri uri.sexp fieldslib sexplib0 bytes base64))
+ (libraries re stringext uri uri-sexp fieldslib sexplib0 bytes base64))
 
 (ocamllex  accept_lexer)
 (ocamlyacc accept_parser)