From 5ef9679ca44f2d90ae9ecffac361add81d598ee3 Mon Sep 17 00:00:00 2001
From: Horis <821938089@qq.com>
Date: Sat, 9 Dec 2023 17:53:06 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96?=
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---
 .../book/src/main/java/me/ag2s/epublib/domain/Resources.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/book/src/main/java/me/ag2s/epublib/domain/Resources.java b/modules/book/src/main/java/me/ag2s/epublib/domain/Resources.java
index 33cda3253..aaa233e4d 100644
--- a/modules/book/src/main/java/me/ag2s/epublib/domain/Resources.java
+++ b/modules/book/src/main/java/me/ag2s/epublib/domain/Resources.java
@@ -31,7 +31,7 @@ public class Resources implements Serializable {
 
     private Map<String, Resource> resources = new HashMap<>();
 
-    private Map<String, Resource> resourcesById = new HashMap<>();
+    private final Map<String, Resource> resourcesById = new HashMap<>();
 
     /**
      * Adds a resource to the resources.