diff --git a/extensions/mermaid-chat-features/package-lock.json b/extensions/mermaid-chat-features/package-lock.json
index 05e2c425cafbc..50769194ac0b4 100644
--- a/extensions/mermaid-chat-features/package-lock.json
+++ b/extensions/mermaid-chat-features/package-lock.json
@@ -9,7 +9,7 @@
       "version": "10.0.0",
       "license": "MIT",
       "dependencies": {
-        "dompurify": "^3.4.1",
+        "dompurify": "^3.4.10",
         "mermaid": "^11.15.0"
       },
       "devDependencies": {
@@ -915,9 +915,9 @@
       }
     },
     "node_modules/dompurify": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.1.tgz",
-      "integrity": "sha512-JahakDAIg1gyOm7dlgWSDjV4n7Ip2PKR55NIT6jrMfIgLFgWo81vdr1/QGqWtFNRqXP9UV71oVePtjqS2ebnPw==",
+      "version": "3.4.10",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.10.tgz",
+      "integrity": "sha512-0xzNv0e7oYC6yyuOGZIABPM4qtg3QxLFniDNPP4ZP90wR8Yq3zgwpRbrNiT4N3IKqDbbYFEJLV+JWEs19aZ//w==",
       "license": "(MPL-2.0 OR Apache-2.0)",
       "optionalDependencies": {
         "@types/trusted-types": "^2.0.7"
diff --git a/extensions/mermaid-chat-features/package.json b/extensions/mermaid-chat-features/package.json
index 592f55d370259..bb1d6890068d6 100644
--- a/extensions/mermaid-chat-features/package.json
+++ b/extensions/mermaid-chat-features/package.json
@@ -130,7 +130,7 @@
     "@vscode/codicons": "^0.0.36"
   },
   "dependencies": {
-    "dompurify": "^3.4.1",
+    "dompurify": "^3.4.10",
     "mermaid": "^11.15.0"
   },
   "overrides": {