diff --git a/web/tester/package-lock.json b/web/tester/package-lock.json
index 19ed89c2..597c40a1 100644
--- a/web/tester/package-lock.json
+++ b/web/tester/package-lock.json
@@ -8,7 +8,7 @@
       "name": "tester",
       "version": "1.0.0",
       "dependencies": {
-        "dompurify": "^3.3.3",
+        "dompurify": "^3.4.11",
         "lodash-es": "^4.18.1",
         "luxon": "^3.7.2",
         "marked": "^17.0.3",
@@ -2520,9 +2520,9 @@
       "license": "MIT"
     },
     "node_modules/dompurify": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.1.tgz",
-      "integrity": "sha512-JahakDAIg1gyOm7dlgWSDjV4n7Ip2PKR55NIT6jrMfIgLFgWo81vdr1/QGqWtFNRqXP9UV71oVePtjqS2ebnPw==",
+      "version": "3.4.11",
+      "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/web/tester/package.json b/web/tester/package.json
index 5e1ef6a0..11a798f5 100644
--- a/web/tester/package.json
+++ b/web/tester/package.json
@@ -12,7 +12,7 @@
     "coverage": "vitest run --coverage"
   },
   "dependencies": {
-    "dompurify": "^3.3.3",
+    "dompurify": "^3.4.11",
     "lodash-es": "^4.18.1",
     "luxon": "^3.7.2",
     "marked": "^17.0.3",