diff --git a/code/extensions/copilot/package-lock.json b/code/extensions/copilot/package-lock.json
index 88025c0c1d0..94a4cc6b7af 100644
--- a/code/extensions/copilot/package-lock.json
+++ b/code/extensions/copilot/package-lock.json
@@ -43,7 +43,7 @@
 				"applicationinsights": "^2.9.7",
 				"best-effort-json-parser": "^1.2.1",
 				"diff": "^8.0.3",
-				"dompurify": "^3.3.2",
+				"dompurify": "^3.4.11",
 				"express": "^5.2.1",
 				"ignore": "^7.0.5",
 				"isbinaryfile": "^5.0.4",
@@ -11029,13 +11029,10 @@
 			}
 		},
 		"node_modules/dompurify": {
-			"version": "3.3.2",
-			"resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.3.2.tgz",
-			"integrity": "sha512-6obghkliLdmKa56xdbLOpUZ43pAR6xFy1uOrxBaIDjT+yaRuuybLjGS9eVBoSR/UPU5fq3OXClEHLJNGvbxKpQ==",
+			"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)",
-			"engines": {
-				"node": ">=20"
-			},
 			"optionalDependencies": {
 				"@types/trusted-types": "^2.0.7"
 			}
diff --git a/code/extensions/copilot/package.json b/code/extensions/copilot/package.json
index 91cf4fe49dc..430995a7f5b 100644
--- a/code/extensions/copilot/package.json
+++ b/code/extensions/copilot/package.json
@@ -6382,7 +6382,7 @@
 		"applicationinsights": "^2.9.7",
 		"best-effort-json-parser": "^1.2.1",
 		"diff": "^8.0.3",
-		"dompurify": "^3.3.2",
+		"dompurify": "^3.4.11",
 		"express": "^5.2.1",
 		"ignore": "^7.0.5",
 		"isbinaryfile": "^5.0.4",