diff --git a/SQLBackupToCOS/BackupService.cs b/SQLBackupToCOS/BackupService.cs
index 6b8b79b..f9945aa 100644
--- a/SQLBackupToCOS/BackupService.cs
+++ b/SQLBackupToCOS/BackupService.cs
@@ -186,7 +186,6 @@ public class BackupService(ILogger<BackupService> logger, IConfiguration config,
 
             await CompressDirectoryAsync([dumpDir, extraDir], finalDump, ct);
 
-            Directory.Delete(dumpDir, recursive: true);
             _logger.LogInformation("Backup completed: {File}", finalDump);
 
             _outputService.CleanOutputDirFiles();
@@ -198,6 +197,27 @@ public class BackupService(ILogger<BackupService> logger, IConfiguration config,
             _logger.LogError(ex, "Error during backup process.");
             throw;
         }
+        finally
+        {
+            try
+            {
+                if (Directory.Exists(dumpDir))
+                {
+                    Directory.Delete(dumpDir, recursive: true);
+                    _logger.LogInformation("Cleaned temporary dump directory: {Dir}", dumpDir);
+                }
+
+                if (File.Exists(finalDump))
+                {
+                    File.Delete(finalDump);
+                    _logger.LogInformation("Cleaned temporary archive file: {File}", finalDump);
+                }
+            }
+            catch (Exception cleanupEx)
+            {
+                _logger.LogWarning(cleanupEx, "Failed to clean temporary files in /data/dumps.");
+            }
+        }
     }
 
     private async Task CompressDirectoryAsync(string[] sourceDirs, string targetFile, CancellationToken ct)