diff --git a/Cargo.toml b/Cargo.toml
index e6dfa2e..d634cad 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -113,5 +113,5 @@ httptest = "0.15.4"
 [profile.release]
 lto = true
 panic = "abort"
-opt-level = 2
+opt-level = 3
 codegen-units = 1
diff --git a/src/info_storages/file_info_storage.rs b/src/info_storages/file_info_storage.rs
index 993f312..fad265b 100644
--- a/src/info_storages/file_info_storage.rs
+++ b/src/info_storages/file_info_storage.rs
@@ -50,6 +50,7 @@ impl InfoStorage for FileInfoStorage {
             err
         })?;
         copy(&mut data.as_bytes(), &mut file).await?;
+        file.sync_data().await?;
         Ok(())
     }
 
diff --git a/src/storages/file_storage.rs b/src/storages/file_storage.rs
index a89985a..2653412 100644
--- a/src/storages/file_storage.rs
+++ b/src/storages/file_storage.rs
@@ -97,6 +97,7 @@ impl Storage for FileStorage {
             })?;
         let mut reader = BufReader::new(bytes);
         copy(&mut reader, &mut file).await?;
+        file.sync_data().await?;
         Ok(())
     }