diff --git a/package-lock.json b/package-lock.json
index 85317ce..266b330 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "dependencies": {
         "@vercel/analytics": "^1.5.0",
         "crypto-js": "^4.2.0",
-        "dompurify": "^3.2.5",
+        "dompurify": "^3.4.13",
         "jsqr": "^1.4.0",
         "marked": "^9.1.6",
         "qrcode": "^1.5.4",
@@ -25,6 +25,9 @@
         "jsdom": "^26.1.0",
         "vite": "^6.2.5",
         "vitest": "^3.2.4"
+      },
+      "engines": {
+        "node": ">=20"
       }
     },
     "node_modules/@asamuzakjp/css-color": {
@@ -1641,9 +1644,9 @@
       "license": "MIT"
     },
     "node_modules/dompurify": {
-      "version": "3.2.5",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.2.5.tgz",
-      "integrity": "sha512-mLPd29uoRe9HpvwP2TxClGQBzGXeEC/we/q+bFlmPPmj2p2Ugl3r6ATu/UU1v77DXNcehiBg9zsr1dREyA/dJQ==",
+      "version": "3.4.13",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.13.tgz",
+      "integrity": "sha512-2vmYIoqjze2d+kakP8S/nS5shfsl587kzwEjcGlTdiksUVgFHnFCsLYDVj/JNqJVOQZGSYBTmuycv0PodwmnMQ==",
       "license": "(MPL-2.0 OR Apache-2.0)",
       "optionalDependencies": {
         "@types/trusted-types": "^2.0.7"
diff --git a/package.json b/package.json
index 7934b11..6cd2804 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   "dependencies": {
     "@vercel/analytics": "^1.5.0",
     "crypto-js": "^4.2.0",
-    "dompurify": "^3.2.5",
+    "dompurify": "^3.4.13",
     "jsqr": "^1.4.0",
     "marked": "^9.1.6",
     "qrcode": "^1.5.4",