diff --git a/src/bin_node/node_run_command.ml b/src/bin_node/node_run_command.ml
index 14018ca77..578814edf 100644
--- a/src/bin_node/node_run_command.ml
+++ b/src/bin_node/node_run_command.ml
@@ -50,7 +50,7 @@ let () =
         "The node is configured to listen on a public address (%a), \
          while only 'private' networks are authorised with `--sandbox`.
            See `%s run --help` on how to change the listening address."
-        Ipaddr.V6.pp_hum addr Sys.argv.(0)
+        Ipaddr.V6.pp addr Sys.argv.(0)
     end
     Data_encoding.(obj1 (req "addr" P2p_addr.encoding))
     (function Non_private_sandbox addr -> Some addr | _ -> None)
diff --git a/src/lib_base/p2p_addr.ml b/src/lib_base/p2p_addr.ml
index 90dcf8477..d9139c4b5 100644
--- a/src/lib_base/p2p_addr.ml
+++ b/src/lib_base/p2p_addr.ml
@@ -46,15 +46,15 @@ type port = int
 let pp ppf addr =
   match Ipaddr.v4_of_v6 addr with
   | Some addr ->
-      Format.fprintf ppf "%a" Ipaddr.V4.pp_hum addr
+      Format.fprintf ppf "%a" Ipaddr.V4.pp addr
   | None ->
-      Format.fprintf ppf "[%a]" Ipaddr.V6.pp_hum addr
+      Format.fprintf ppf "[%a]" Ipaddr.V6.pp addr
 
 let of_string_opt str =
-  Option.map (Ipaddr.of_string str) ~f:begin function
-    | Ipaddr.V4 addr -> Ipaddr.v6_of_v4 addr
-    | V6 addr -> addr
-  end
+  match Ipaddr.of_string str with
+  | Ok (Ipaddr.V4 addr) -> Some (Ipaddr.v6_of_v4 addr)
+  | Ok (V6 addr) -> Some addr
+  | Error (`Msg _) -> None
 
 let of_string_exn str =
   match of_string_opt str with
diff --git a/src/lib_base/p2p_connection.ml b/src/lib_base/p2p_connection.ml
index 6a2cab77b..b63282492 100644
--- a/src/lib_base/p2p_connection.ml
+++ b/src/lib_base/p2p_connection.ml
@@ -36,9 +36,9 @@ module Id = struct
   let pp ppf (addr, port) =
     match port with
     | None ->
-        Format.fprintf ppf "[%a]:??" Ipaddr.V6.pp_hum addr
+        Format.fprintf ppf "[%a]:??" Ipaddr.V6.pp addr
     | Some port ->
-        Format.fprintf ppf "[%a]:%d" Ipaddr.V6.pp_hum addr port
+        Format.fprintf ppf "[%a]:%d" Ipaddr.V6.pp addr port
   let pp_opt ppf = function
     | None -> Format.pp_print_string ppf "none"
     | Some point -> pp ppf point
diff --git a/src/lib_base/p2p_point.ml b/src/lib_base/p2p_point.ml
index 478de2860..6bd562a7c 100644
--- a/src/lib_base/p2p_point.ml
+++ b/src/lib_base/p2p_point.ml
@@ -36,9 +36,9 @@ module Id = struct
   let pp ppf (addr, port) =
     match Ipaddr.v4_of_v6 addr with
     | Some addr ->
-        Format.fprintf ppf "%a:%d" Ipaddr.V4.pp_hum addr port
+        Format.fprintf ppf "%a:%d" Ipaddr.V4.pp addr port
     | None ->
-        Format.fprintf ppf "[%a]:%d" Ipaddr.V6.pp_hum addr port
+        Format.fprintf ppf "[%a]:%d" Ipaddr.V6.pp addr port
   let pp_opt ppf = function
     | None -> Format.pp_print_string ppf "none"
     | Some point -> pp ppf point
diff --git a/src/lib_base/tezos-base.opam b/src/lib_base/tezos-base.opam
index 058b04909..1882940b1 100644
--- a/src/lib_base/tezos-base.opam
+++ b/src/lib_base/tezos-base.opam
@@ -16,7 +16,7 @@ depends: [
   "tezos-rpc"
   "calendar"
   "ezjsonm" { >= "0.5.0" }
-  "ipaddr"
+  "ipaddr" { >= "3.0.0" }
   "mtime" { >= "1.0.0" }
   "re" { >= "1.7.2" }
 ]
diff --git a/src/lib_p2p/p2p_acl.ml b/src/lib_p2p/p2p_acl.ml
index ce0ef2cac..27278d2e4 100644
--- a/src/lib_p2p/p2p_acl.ml
+++ b/src/lib_p2p/p2p_acl.ml
@@ -111,7 +111,7 @@ module PatriciaTree(V:HashPtree.Value) = struct
     let lst = fold (fun p _ l -> p :: l) t [] in
     Format.fprintf ppf "@[<2>[%a]@]"
       Format.(pp_print_list ~pp_sep:(fun ppf () -> fprintf ppf ";@ ")
-                Ipaddr.V6.Prefix.pp_hum)
+                Ipaddr.V6.Prefix.pp)
       lst
 
 end
diff --git a/src/lib_p2p/test/test_p2p_ipv6set.ml b/src/lib_p2p/test/test_p2p_ipv6set.ml
index f5c9dd3ea..2cb96445e 100644
--- a/src/lib_p2p/test/test_p2p_ipv6set.ml
+++ b/src/lib_p2p/test/test_p2p_ipv6set.ml
@@ -110,12 +110,12 @@ let test_fold _ =
 
 let print_pset ppf pset =
   PSet.iter (fun p ->
-      Format.fprintf ppf "%a " Ipaddr.V6.Prefix.pp_hum p
+      Format.fprintf ppf "%a " Ipaddr.V6.Prefix.pp p
     ) pset
 
 let print_list ppf l =
   List.iter (fun p ->
-      Format.fprintf ppf "%a " Ipaddr.V6.Prefix.pp_hum p
+      Format.fprintf ppf "%a " Ipaddr.V6.Prefix.pp p
     ) l
 
 let test_to_list _ =
diff --git a/src/lib_stdlib_unix/lwt_utils_unix.ml b/src/lib_stdlib_unix/lwt_utils_unix.ml
index 2225e93f4..3c95ad6d9 100644
--- a/src/lib_stdlib_unix/lwt_utils_unix.ml
+++ b/src/lib_stdlib_unix/lwt_utils_unix.ml
@@ -285,8 +285,8 @@ module Socket = struct
   let handle_litteral_ipv6 host =
     (* To strip '[' and ']' when a litteral IPv6 is provided *)
     match Ipaddr.of_string host with
-    | None -> host
-    | Some ipaddr -> Ipaddr.to_string ipaddr
+    | Error (`Msg _) -> host
+    | Ok ipaddr -> Ipaddr.to_string ipaddr
 
   let connect = function
     | Unix path ->
diff --git a/src/lib_stdlib_unix/tezos-stdlib-unix.opam b/src/lib_stdlib_unix/tezos-stdlib-unix.opam
index b70718cfc..62cf0ef2a 100644
--- a/src/lib_stdlib_unix/tezos-stdlib-unix.opam
+++ b/src/lib_stdlib_unix/tezos-stdlib-unix.opam
@@ -11,7 +11,7 @@ depends: [
   "tezos-base"
   "lwt" { >= "3.0.0" }
   "conf-libev"
-  "ipaddr"
+  "ipaddr" { >= "3.0.0" }
 ]
 build: [
   [ "dune" "build" "-p" name "-j" jobs ]