diff --git a/code/extensions/mermaid-chat-features/package-lock.json b/code/extensions/mermaid-chat-features/package-lock.json
index 915dc71dc0d..1a96e6d8c8a 100644
--- a/code/extensions/mermaid-chat-features/package-lock.json
+++ b/code/extensions/mermaid-chat-features/package-lock.json
@@ -9,7 +9,7 @@
       "version": "10.0.0",
       "license": "MIT",
       "dependencies": {
-        "dompurify": "^3.4.2",
+        "dompurify": "^3.4.11",
         "mermaid": "^11.12.3"
       },
       "devDependencies": {
@@ -974,9 +974,9 @@
       }
     },
     "node_modules/dompurify": {
-      "version": "3.4.5",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.5.tgz",
-      "integrity": "sha512-OrwIBKsdNSVEeubdJ1HBv/wNENRM9ytAVCv7YXt//A3vPdVMNuACRqK9mXCGCBW2ln7BT/A4X0jXHo2Gu89miA==",
+      "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/code/extensions/mermaid-chat-features/package.json b/code/extensions/mermaid-chat-features/package.json
index ae14bc8645c..92c7c3bc840 100644
--- a/code/extensions/mermaid-chat-features/package.json
+++ b/code/extensions/mermaid-chat-features/package.json
@@ -130,7 +130,7 @@
     "@vscode/codicons": "^0.0.36"
   },
   "dependencies": {
-    "dompurify": "^3.4.2",
+    "dompurify": "^3.4.11",
     "mermaid": "^11.12.3"
   },
   "overrides": {