diff --git a/package-lock.json b/package-lock.json
index 061759eda..cf71d0064 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -37,7 +37,7 @@
         "@vitest/coverage-v8": "^4.1.11",
         "@vue/test-utils": "^2.4.11",
         "@vue/tsconfig": "^0.8.1",
-        "happy-dom": "^20.3.1",
+        "happy-dom": "^21.0.0",
         "typescript": "^5.9.3",
         "vite": "^7.3.6",
         "vitest": "^4.1.11"
@@ -4712,6 +4712,19 @@
         "ieee754": "^1.1.13"
       }
     },
+    "node_modules/buffer-image-size": {
+      "version": "0.6.4",
+      "resolved": "https://registry.npmjs.org/buffer-image-size/-/buffer-image-size-0.6.4.tgz",
+      "integrity": "sha512-nEh+kZOPY1w+gcCMobZ6ETUp9WfibndnosbpwB1iJk/8Gt5ZF2bhS6+B6bPYz424KtwsR6Rflc3tCz1/ghX2dQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      },
+      "engines": {
+        "node": ">=4.0"
+      }
+    },
     "node_modules/buffer-xor": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/buffer-xor/-/buffer-xor-1.0.3.tgz",
@@ -6993,18 +7006,19 @@
       "dev": true
     },
     "node_modules/happy-dom": {
-      "version": "20.8.9",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.8.9.tgz",
-      "integrity": "sha512-Tz23LR9T9jOGVZm2x1EPdXqwA37G/owYMxRwU0E4miurAtFsPMQ1d2Jc2okUaSjZqAFz2oEn3FLXC5a0a+siyA==",
+      "version": "21.0.4",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-21.0.4.tgz",
+      "integrity": "sha512-tFm+GaLBgo6o0awHnvHaNoraVo27qJ+2tZEtZ+cIa08hXbeitrxAJajLI05hsUy/2/YTKcUjQYzHe5mCcraLBw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@types/node": ">=20.0.0",
         "@types/whatwg-mimetype": "^3.0.2",
         "@types/ws": "^8.18.1",
+        "buffer-image-size": "^0.6.4",
         "entities": "^7.0.1",
         "whatwg-mimetype": "^3.0.0",
-        "ws": "^8.18.3"
+        "ws": "^8.21.0"
       },
       "engines": {
         "node": ">=20.0.0"
@@ -16167,6 +16181,15 @@
         "ieee754": "^1.1.13"
       }
     },
+    "buffer-image-size": {
+      "version": "0.6.4",
+      "resolved": "https://registry.npmjs.org/buffer-image-size/-/buffer-image-size-0.6.4.tgz",
+      "integrity": "sha512-nEh+kZOPY1w+gcCMobZ6ETUp9WfibndnosbpwB1iJk/8Gt5ZF2bhS6+B6bPYz424KtwsR6Rflc3tCz1/ghX2dQ==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "buffer-xor": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/buffer-xor/-/buffer-xor-1.0.3.tgz",
@@ -17725,17 +17748,18 @@
       "dev": true
     },
     "happy-dom": {
-      "version": "20.8.9",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.8.9.tgz",
-      "integrity": "sha512-Tz23LR9T9jOGVZm2x1EPdXqwA37G/owYMxRwU0E4miurAtFsPMQ1d2Jc2okUaSjZqAFz2oEn3FLXC5a0a+siyA==",
+      "version": "21.0.4",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-21.0.4.tgz",
+      "integrity": "sha512-tFm+GaLBgo6o0awHnvHaNoraVo27qJ+2tZEtZ+cIa08hXbeitrxAJajLI05hsUy/2/YTKcUjQYzHe5mCcraLBw==",
       "dev": true,
       "requires": {
         "@types/node": ">=20.0.0",
         "@types/whatwg-mimetype": "^3.0.2",
         "@types/ws": "^8.18.1",
+        "buffer-image-size": "^0.6.4",
         "entities": "^7.0.1",
         "whatwg-mimetype": "^3.0.0",
-        "ws": "^8.18.3"
+        "ws": "^8.21.0"
       },
       "dependencies": {
         "entities": {
diff --git a/package.json b/package.json
index e1f934fa7..6a5e9567c 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,7 @@
     "@vitest/coverage-v8": "^4.1.11",
     "@vue/test-utils": "^2.4.11",
     "@vue/tsconfig": "^0.8.1",
-    "happy-dom": "^20.3.1",
+    "happy-dom": "^21.0.0",
     "typescript": "^5.9.3",
     "vite": "^7.3.6",
     "vitest": "^4.1.11"