diff --git a/package-lock.json b/package-lock.json
index 29dcff7..4e0f35a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {
-        "dompurify": "^3.4.0",
+        "dompurify": "^3.4.11",
         "github-markdown-css": "^5.8.1",
         "marked": "^15.0.7",
         "mermaid": "^11.15.0",
@@ -1795,9 +1795,9 @@
       }
     },
     "node_modules/dompurify": {
-      "version": "3.4.0",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.0.tgz",
-      "integrity": "sha512-nolgK9JcaUXMSmW+j1yaSvaEaoXYHwWyGJlkoCTghc97KgGDDSnpoU/PlEnw63Ah+TGKFOyY+X5LnxaWbCSfXg==",
+      "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"
diff --git a/package.json b/package.json
index 132a353..c52e593 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "vite": "^6.4.2"
   },
   "dependencies": {
-    "dompurify": "^3.4.0",
+    "dompurify": "^3.4.11",
     "github-markdown-css": "^5.8.1",
     "marked": "^15.0.7",
     "mermaid": "^11.15.0",