diff --git a/samples/react-application-alert-banner/package-lock.json b/samples/react-application-alert-banner/package-lock.json
index 8ff0822d0..696631041 100644
--- a/samples/react-application-alert-banner/package-lock.json
+++ b/samples/react-application-alert-banner/package-lock.json
@@ -18,12 +18,12 @@
         "@microsoft/sp-dialog": "1.21.1",
         "@microsoft/sp-http": "1.21.1",
         "@pnp/spfx-controls-react": "^3.22.0",
-        "@types/dompurify": "^3.0.5",
+        "@types/dompurify": "^3.2.0",
         "@types/node": "^24.2.1",
         "@types/react": "^17.0.0",
         "@types/react-dom": "^17.0.0",
         "del": "^8.0.0",
-        "dompurify": "^3.2.6",
+        "dompurify": "^3.3.1",
         "gulp-cli": "^3.1.0",
         "marked": "^16.1.2",
         "react": "v17.0.0",
@@ -19110,12 +19110,13 @@
       }
     },
     "node_modules/@types/dompurify": {
-      "version": "3.0.5",
-      "resolved": "https://registry.npmjs.org/@types/dompurify/-/dompurify-3.0.5.tgz",
-      "integrity": "sha512-1Wg0g3BtQF7sSb27fJQAKck1HECM6zV1EB66j8JH9i3LCjYabJa0FSdiSgsD5K/RbrsR0SiraKacLB+T8ZVYAg==",
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/@types/dompurify/-/dompurify-3.2.0.tgz",
+      "integrity": "sha512-Fgg31wv9QbLDA0SpTOXO3MaxySc4DKGLi8sna4/Utjo4r3ZRPdCt4UQee8BWr+Q5z21yifghREPJGYaEOEIACg==",
+      "deprecated": "This is a stub types definition. dompurify provides its own type definitions, so you do not need this installed.",
       "license": "MIT",
       "dependencies": {
-        "@types/trusted-types": "*"
+        "dompurify": "*"
       }
     },
     "node_modules/@types/eslint": {
@@ -25192,9 +25193,9 @@
       }
     },
     "node_modules/dompurify": {
-      "version": "3.2.6",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.2.6.tgz",
-      "integrity": "sha512-/2GogDQlohXPZe6D6NOgQvXLPSYBqIWMnZ8zzOhn09REE4eyAzb+Hed3jhoM9OkuaJ8P6ZGTTVWQKAi8ieIzfQ==",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.3.1.tgz",
+      "integrity": "sha512-qkdCKzLNtrgPFP1Vo+98FRzJnBRGe4ffyCea9IwHB1fyxPOeNTHpLKYGd4Uk9xvNoH0ZoOjwZxNptyMwqrId1Q==",
       "license": "(MPL-2.0 OR Apache-2.0)",
       "optionalDependencies": {
         "@types/trusted-types": "^2.0.7"
diff --git a/samples/react-application-alert-banner/package.json b/samples/react-application-alert-banner/package.json
index 181401d96..06c59df2e 100644
--- a/samples/react-application-alert-banner/package.json
+++ b/samples/react-application-alert-banner/package.json
@@ -22,12 +22,12 @@
     "@microsoft/sp-dialog": "1.21.1",
     "@microsoft/sp-http": "1.21.1",
     "@pnp/spfx-controls-react": "^3.22.0",
-    "@types/dompurify": "^3.0.5",
+    "@types/dompurify": "^3.2.0",
     "@types/node": "^24.2.1",
     "@types/react": "^17.0.0",
     "@types/react-dom": "^17.0.0",
     "del": "^8.0.0",
-    "dompurify": "^3.2.6",
+    "dompurify": "^3.3.1",
     "gulp-cli": "^3.1.0",
     "marked": "^16.1.2",
     "react": "v17.0.0",