diff --git a/sharedb.planx.uk/package.json b/sharedb.planx.uk/package.json
index 2a50982362..616c366341 100644
--- a/sharedb.planx.uk/package.json
+++ b/sharedb.planx.uk/package.json
@@ -4,7 +4,7 @@
   "private": true,
   "dependencies": {
     "@teamwork/websocket-json-stream": "^2.0.0",
-    "dompurify": "^3.1.2",
+    "dompurify": "^3.1.3",
     "jsdom": "^25.0.0",
     "jsonwebtoken": "^8.5.1",
     "pg": "^8.12.0",
diff --git a/sharedb.planx.uk/pnpm-lock.yaml b/sharedb.planx.uk/pnpm-lock.yaml
index 5a058679eb..54b3d1285a 100644
--- a/sharedb.planx.uk/pnpm-lock.yaml
+++ b/sharedb.planx.uk/pnpm-lock.yaml
@@ -14,8 +14,8 @@ dependencies:
     specifier: ^2.0.0
     version: 2.0.0
   dompurify:
-    specifier: ^3.1.2
-    version: 3.1.2
+    specifier: ^3.1.3
+    version: 3.1.3
   jsdom:
     specifier: ^25.0.0
     version: 25.0.0
@@ -119,8 +119,8 @@ packages:
     engines: {node: '>=0.4.0'}
     dev: false
 
-  /dompurify@3.1.2:
-    resolution: {integrity: sha512-hLGGBI1tw5N8qTELr3blKjAML/LY4ANxksbS612UiJyDfyf/2D092Pvm+S7pmeTGJRqvlJkFzBoHBQKgQlOQVg==}
+  /dompurify@3.1.3:
+    resolution: {integrity: sha512-5sOWYSNPaxz6o2MUPvtyxTTqR4D3L77pr5rUQoWgD5ROQtVIZQgJkXbo1DLlK3vj11YGw5+LnF4SYti4gZmwng==}
     dev: false
 
   /dynamic-dedupe@0.3.0: