diff --git a/src/models/data.rs b/src/models/data.rs
index 3a9bf8a..1a7c00b 100644
--- a/src/models/data.rs
+++ b/src/models/data.rs
@@ -3,8 +3,8 @@
 pub mod entity_method;
 pub mod packet;
 pub mod payload;
-pub mod subtype_2f;
 pub mod type_0;
+pub mod update_arena;
 
 use std::io::Read;
 
diff --git a/src/models/data/entity_method.rs b/src/models/data/entity_method.rs
index 6eeebae..ea98567 100644
--- a/src/models/data/entity_method.rs
+++ b/src/models/data/entity_method.rs
@@ -5,7 +5,7 @@ use serde::Serialize;
 use serde_with::serde_as;
 
 use crate::models::data::read_quirky_length;
-use crate::models::data::subtype_2f::Subtype2F;
+use crate::models::data::update_arena::UpdateArena;
 use crate::result::Result;
 
 #[serde_as]
@@ -13,7 +13,7 @@ use crate::result::Result;
 pub enum EntityMethod {
     Subtype2F {
         field_number: u64,
-        sub_type_2f: Subtype2F,
+        sub_type_2f: UpdateArena,
 
         /// Original payload for investigation.
         #[serde_as(as = "serde_with::hex::Hex")]
@@ -45,7 +45,7 @@ impl EntityMethod {
                 let message_length = read_quirky_length(&mut reader)?;
                 Self::Subtype2F {
                     field_number,
-                    sub_type_2f: Subtype2F::decode(&reader[..message_length])?,
+                    sub_type_2f: UpdateArena::decode(&reader[..message_length])?,
                     payload,
                 }
             }
diff --git a/src/models/data/subtype_2f.rs b/src/models/data/update_arena.rs
similarity index 93%
rename from src/models/data/subtype_2f.rs
rename to src/models/data/update_arena.rs
index 390d309..5379fa0 100644
--- a/src/models/data/subtype_2f.rs
+++ b/src/models/data/update_arena.rs
@@ -1,8 +1,9 @@
 use prost::Message;
 use serde::Serialize;
 
+/// Subtype `0x2F`.
 #[derive(Message, Serialize)]
-pub struct Subtype2F {
+pub struct UpdateArena {
     #[prost(message, tag = "1")]
     pub players: Option<Players>,
 }