diff --git a/crates/presentation/src/route/admin/asset.rs b/crates/presentation/src/route/admin/asset.rs
index 60af07c..884b931 100644
--- a/crates/presentation/src/route/admin/asset.rs
+++ b/crates/presentation/src/route/admin/asset.rs
@@ -183,7 +183,7 @@ fn map_jacket_error(error: AssetUploadError) -> AppError {
         AssetUploadError::UnsupportedContentType => {
             AppError::bad_request("jacket must be JPEG, PNG, or WebP")
         }
-        AssetUploadError::TooLarge => AppError::bad_request("jacket exceeds 5 MiB"),
+        AssetUploadError::TooLarge => AppError::bad_request("jacket exceeds 20 MiB"),
         AssetUploadError::InvalidData => AppError::bad_request("jacket image is invalid"),
         AssetUploadError::InvalidFileName => AppError::bad_request("jacket file name is invalid"),
     }
@@ -192,7 +192,7 @@ fn map_jacket_error(error: AssetUploadError) -> AppError {
 fn map_audio_error(error: AssetUploadError) -> AppError {
     match error {
         AssetUploadError::UnsupportedContentType => AppError::bad_request("audio must be WAV"),
-        AssetUploadError::TooLarge => AppError::bad_request("audio exceeds 30 MiB"),
+        AssetUploadError::TooLarge => AppError::bad_request("audio exceeds 60 MiB"),
         AssetUploadError::InvalidData => AppError::bad_request("audio is invalid"),
         AssetUploadError::InvalidFileName => AppError::bad_request("audio file name is invalid"),
     }
diff --git a/crates/presentation/src/route/mod.rs b/crates/presentation/src/route/mod.rs
index 6aa9d28..fe76b36 100644
--- a/crates/presentation/src/route/mod.rs
+++ b/crates/presentation/src/route/mod.rs
@@ -6,6 +6,7 @@ use axum::{
     routing::{get, patch, post},
 };
 use tower_http::{cors::CorsLayer, trace::TraceLayer};
+use usecase::asset::MAX_AUDIO_SIZE;
 
 use crate::{
     auth::{Authenticator, AuthorizationPolicy, PrincipalKind},
@@ -77,7 +78,7 @@ pub fn create_app(state: State, authenticator: Option<Authenticator>) -> Router
             get(admin::asset::get_chart),
         )
         .route("/db/synchronize", post(admin::handle_db_synchronization));
-    let admin_routes = admin_routes.layer(DefaultBodyLimit::max(31 * 1024 * 1024));
+    let admin_routes = admin_routes.layer(DefaultBodyLimit::max(MAX_AUDIO_SIZE));
 
     let private_routes = Router::new()
         .nest("/users", users)
diff --git a/crates/usecase/src/asset.rs b/crates/usecase/src/asset.rs
index 484a3c0..3ed3890 100644
--- a/crates/usecase/src/asset.rs
+++ b/crates/usecase/src/asset.rs
@@ -4,8 +4,8 @@ use image::{ImageFormat, ImageReader, Limits};
 use thiserror::Error;
 use tokio::io::AsyncRead;
 
-pub const MAX_JACKET_SIZE: usize = 5 * 1024 * 1024;
-pub const MAX_AUDIO_SIZE: usize = 30 * 1024 * 1024;
+pub const MAX_JACKET_SIZE: usize = 20 * 1024 * 1024;
+pub const MAX_AUDIO_SIZE: usize = 60 * 1024 * 1024;
 pub const MAX_CHART_SIZE: usize = 5 * 1024 * 1024;
 
 #[derive(Debug, Clone, Copy, Eq, PartialEq)]
@@ -276,6 +276,16 @@ mod tests {
         assert_eq!(&upload.bytes[..8], b"\x89PNG\r\n\x1a\n");
     }
 
+    #[test]
+    fn rejects_jacket_over_size_limit() {
+        let bytes = vec![0; MAX_JACKET_SIZE + 1];
+
+        assert!(matches!(
+            AssetUpload::jacket("image/png", bytes),
+            Err(AssetUploadError::TooLarge)
+        ));
+    }
+
     #[test]
     fn accepts_wav_header() {
         let mut bytes = b"RIFF".to_vec();
@@ -288,6 +298,18 @@ mod tests {
         );
     }
 
+    #[test]
+    fn rejects_audio_over_size_limit() {
+        let mut bytes = vec![0; MAX_AUDIO_SIZE + 1];
+        bytes[..4].copy_from_slice(b"RIFF");
+        bytes[8..12].copy_from_slice(b"WAVE");
+
+        assert!(matches!(
+            AssetUpload::audio("audio/wav", bytes),
+            Err(AssetUploadError::TooLarge)
+        ));
+    }
+
     #[test]
     fn rejects_invalid_wav_header() {
         assert!(matches!(