diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ffd0bf..c5cf3be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+# v0.10.0
+
+- Updated for Gleam v0.33.0.
+- The `options.to_map` function has been renamed to `options.to_dict`.
+
 # v0.9.1
 
 - Pass state value to `on_close` handler
diff --git a/gleam.toml b/gleam.toml
index fd0eee0..609e71a 100644
--- a/gleam.toml
+++ b/gleam.toml
@@ -1,5 +1,5 @@
 name = "glisten"
-version = "0.9.2"
+version = "0.10.0"
 description = "a shiny Gleam TCP/SSL server"
 licences = ["Apache-2.0"]
 repository = { type = "github", user = "rawhat", repo = "glisten" }
diff --git a/src/glisten/socket/options.gleam b/src/glisten/socket/options.gleam
index c7983e5..79468d0 100644
--- a/src/glisten/socket/options.gleam
+++ b/src/glisten/socket/options.gleam
@@ -1,7 +1,7 @@
 import gleam/dynamic.{type Dynamic}
 import gleam/erlang/atom
 import gleam/list
-import gleam/map.{type Map}
+import gleam/dict.{type Dict}
 import gleam/pair
 
 /// Mode for the socket.  Currently `list` is not supported
@@ -36,7 +36,7 @@ pub type TcpOption {
   Inet6
 }
 
-pub fn to_map(options: List(TcpOption)) -> Map(atom.Atom, Dynamic) {
+pub fn to_dict(options: List(TcpOption)) -> Dict(atom.Atom, Dynamic) {
   let opt_decoder = dynamic.tuple2(dynamic.dynamic, dynamic.dynamic)
 
   options
@@ -58,7 +58,7 @@ pub fn to_map(options: List(TcpOption)) -> Map(atom.Atom, Dynamic) {
   })
   |> list.filter_map(opt_decoder)
   |> list.map(pair.map_first(_, dynamic.unsafe_coerce))
-  |> map.from_list
+  |> dict.from_list
 }
 
 const default_options = [
@@ -73,12 +73,12 @@ const default_options = [
 ]
 
 pub fn merge_with_defaults(options: List(TcpOption)) -> List(TcpOption) {
-  let overrides = to_map(options)
+  let overrides = to_dict(options)
 
   default_options
-  |> to_map
-  |> map.merge(overrides)
-  |> map.to_list
+  |> to_dict
+  |> dict.merge(overrides)
+  |> dict.to_list
   |> list.map(dynamic.from)
   |> list.map(dynamic.unsafe_coerce)
   |> list.append([Inet6])
diff --git a/src/glisten/socket/transport.gleam b/src/glisten/socket/transport.gleam
index fe14169..9d69d29 100644
--- a/src/glisten/socket/transport.gleam
+++ b/src/glisten/socket/transport.gleam
@@ -2,7 +2,7 @@ import gleam/bit_builder.{type BitBuilder}
 import gleam/dynamic.{type Dynamic}
 import gleam/erlang/atom.{type Atom}
 import gleam/erlang/process.{type Pid}
-import gleam/map.{type Map}
+import gleam/dict.{type Dict}
 import glisten/socket/options
 import glisten/socket.{type ListenSocket, type Socket, type SocketReason}
 import glisten/ssl
@@ -30,7 +30,7 @@ type Send =
   fn(Socket, BitBuilder) -> Result(Nil, SocketReason)
 
 type SocketInfo =
-  fn(Socket) -> Map(Atom, Dynamic)
+  fn(Socket) -> Dict(Atom, Dynamic)
 
 type Close =
   fn(Socket) -> Result(Nil, SocketReason)
@@ -126,4 +126,4 @@ pub fn ssl() -> Transport {
 }
 
 @external(erlang, "socket", "info")
-pub fn socket_info(socket: Socket) -> Map(a, b)
+pub fn socket_info(socket: Socket) -> Dict(a, b)
diff --git a/src/glisten/ssl.gleam b/src/glisten/ssl.gleam
index 5bf2863..beb2fa6 100644
--- a/src/glisten/ssl.gleam
+++ b/src/glisten/ssl.gleam
@@ -3,7 +3,7 @@ import gleam/dynamic.{type Dynamic}
 import gleam/erlang/atom.{type Atom}
 import gleam/erlang/process.{type Pid}
 import gleam/list
-import gleam/map
+import gleam/dict
 import glisten/socket.{type ListenSocket, type Socket, type SocketReason}
 import glisten/socket/options
 
@@ -58,8 +58,8 @@ pub fn set_opts(
   opts: List(options.TcpOption),
 ) -> Result(Nil, Nil) {
   opts
-  |> options.to_map
-  |> map.to_list
+  |> options.to_dict
+  |> dict.to_list
   |> list.map(dynamic.from)
   |> do_set_opts(socket, _)
 }
diff --git a/src/glisten/tcp.gleam b/src/glisten/tcp.gleam
index 08fce68..dc71183 100644
--- a/src/glisten/tcp.gleam
+++ b/src/glisten/tcp.gleam
@@ -3,7 +3,7 @@ import gleam/dynamic.{type Dynamic}
 import gleam/erlang/atom.{type Atom}
 import gleam/erlang/process.{type Pid}
 import gleam/list
-import gleam/map.{type Map}
+import gleam/dict.{type Dict}
 import glisten/socket.{type ListenSocket, type Socket, type SocketReason}
 import glisten/socket/options.{type TcpOption}
 
@@ -39,7 +39,7 @@ pub fn receive(socket: Socket, length: Int) -> Result(BitArray, SocketReason)
 pub fn send(socket: Socket, packet: BitBuilder) -> Result(Nil, SocketReason)
 
 @external(erlang, "socket", "info")
-pub fn socket_info(socket: Socket) -> Map(a, b)
+pub fn socket_info(socket: Socket) -> Dict(a, b)
 
 @external(erlang, "glisten_tcp_ffi", "close")
 pub fn close(socket: a) -> Result(Nil, SocketReason)
@@ -58,8 +58,8 @@ fn do_set_opts(socket: Socket, opts: List(Dynamic)) -> Result(Nil, Nil)
 /// Update the optons for a socket (mutates the socket)
 pub fn set_opts(socket: Socket, opts: List(TcpOption)) -> Result(Nil, Nil) {
   opts
-  |> options.to_map
-  |> map.to_list
+  |> options.to_dict
+  |> dict.to_list
   |> list.map(dynamic.from)
   |> do_set_opts(socket, _)
 }