diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5daced9..8f88d53 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# 2026.5.4
+- Chg: メモリをキャッシュしないように
+
 # 2026.5.3
 - Chg: 震度分布画像のメッセージを変更
 - Fix: distに震度分布画像のアセットと地域マップがコピーされるように
diff --git a/package.json b/package.json
index 4d41fb1..c674248 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "notice-uwuzu",
-  "version": "2026.5.3",
+  "version": "2026.5.4",
   "type": "module",
   "main": "dist/index.js",
   "scripts": {
diff --git a/src/lib/memory.ts b/src/lib/memory.ts
index 5e89aec..8cc7630 100644
--- a/src/lib/memory.ts
+++ b/src/lib/memory.ts
@@ -17,17 +17,14 @@ class MemoryClass {
         max_length: 0,
       }));
     }
-
-    this.cachedMemory = JSON.parse(readFileSync(path, "utf-8"));
   }
 
   get memory() {
-    return this.cachedMemory;
+    return JSON.parse(readFileSync(path, "utf-8"));
   }
 
   set memory(data: any) {
-    this.cachedMemory = data;
-    writeFileSync(path, JSON.stringify(this.cachedMemory), "utf-8");
+    writeFileSync(path, JSON.stringify(data), "utf-8");
   }
 }