diff --git a/web/package-lock.json b/web/package-lock.json
index 9d1b30d..36a5079 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -12,7 +12,7 @@
         "@tailwindcss/postcss": "^4.3.1",
         "@tailwindcss/typography": "^0.5.20",
         "astro": "^6.4.6",
-        "isomorphic-dompurify": "^3.17.0",
+        "isomorphic-dompurify": "^3.18.0",
         "marked": "^18.0.5",
         "postcss": "^8.5.15",
         "react": "^19.2.7",
@@ -3394,9 +3394,9 @@
       }
     },
     "node_modules/dompurify": {
-      "version": "3.4.10",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.10.tgz",
-      "integrity": "sha512-0xzNv0e7oYC6yyuOGZIABPM4qtg3QxLFniDNPP4ZP90wR8Yq3zgwpRbrNiT4N3IKqDbbYFEJLV+JWEs19aZ//w==",
+      "version": "3.4.11",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.11.tgz",
+      "integrity": "sha512-zhlUV12GsaRzMsf9q5M254YhA4+VuF0fG+QFqu6aYpoGlKtz+w8//jBcGVYBgQkR5GHjUomejY84AV+/uPbWdw==",
       "license": "(MPL-2.0 OR Apache-2.0)",
       "optionalDependencies": {
         "@types/trusted-types": "^2.0.7"
@@ -4011,12 +4011,12 @@
       }
     },
     "node_modules/isomorphic-dompurify": {
-      "version": "3.17.0",
-      "resolved": "https://registry.npmjs.org/isomorphic-dompurify/-/isomorphic-dompurify-3.17.0.tgz",
-      "integrity": "sha512-++PY22SYWZv/kTWOr5WQ8rNznkIKj6I/SDUVZnXXM67EhRO7ScVLDdZYNxNgEsPAOA5sfpGBcqnnbLx8WJHO1g==",
+      "version": "3.18.0",
+      "resolved": "https://registry.npmjs.org/isomorphic-dompurify/-/isomorphic-dompurify-3.18.0.tgz",
+      "integrity": "sha512-ajp0D8laIHeoYlhBTevpE2HUhqWaqLXFk6K/wV3Ok8kDraBZpZsifwVWaY8IfJntMRIo1VSksgKV+lXyet9Q7A==",
       "license": "MIT",
       "dependencies": {
-        "dompurify": "^3.4.10",
+        "dompurify": "^3.4.11",
         "jsdom": "^29.1.1"
       },
       "engines": {
diff --git a/web/package.json b/web/package.json
index 8ee295b..d1e475a 100644
--- a/web/package.json
+++ b/web/package.json
@@ -14,7 +14,7 @@
     "@tailwindcss/postcss": "^4.3.1",
     "@tailwindcss/typography": "^0.5.20",
     "astro": "^6.4.6",
-    "isomorphic-dompurify": "^3.17.0",
+    "isomorphic-dompurify": "^3.18.0",
     "marked": "^18.0.5",
     "postcss": "^8.5.15",
     "react": "^19.2.7",