diff --git a/src/main/java/club/joylink/xiannccda/ats/cache/LineGraphicDataRepository.java b/src/main/java/club/joylink/xiannccda/ats/cache/LineGraphicDataRepository.java
index 740337d..437f9df 100644
--- a/src/main/java/club/joylink/xiannccda/ats/cache/LineGraphicDataRepository.java
+++ b/src/main/java/club/joylink/xiannccda/ats/cache/LineGraphicDataRepository.java
@@ -41,11 +41,11 @@ public class LineGraphicDataRepository {
       new HashMap<>();
 
   /** 线路-设备code-设备 */
-  private static final HashBasedTable<Short, String, MessageOrBuilder> line_code_table =
+  private static final HashBasedTable<Integer, String, MessageOrBuilder> line_code_table =
       HashBasedTable.create();
 
   /** 线路-设备id-设备 */
-  private static final HashBasedTable<Short, String, MessageOrBuilder> line_id_table =
+  private static final HashBasedTable<Integer, String, MessageOrBuilder> line_id_table =
       HashBasedTable.create();
 
   /**