diff --git a/backend/composer.lock b/backend/composer.lock
index 7e0b6a083..c7beaf5bc 100644
--- a/backend/composer.lock
+++ b/backend/composer.lock
@@ -2302,20 +2302,20 @@
         },
         {
             "name": "ezyang/htmlpurifier",
-            "version": "v4.18.0",
+            "version": "v4.19.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/ezyang/htmlpurifier.git",
-                "reference": "cb56001e54359df7ae76dc522d08845dc741621b"
+                "reference": "b287d2a16aceffbf6e0295559b39662612b77fcf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/cb56001e54359df7ae76dc522d08845dc741621b",
-                "reference": "cb56001e54359df7ae76dc522d08845dc741621b",
+                "url": "https://api.github.com/repos/ezyang/htmlpurifier/zipball/b287d2a16aceffbf6e0295559b39662612b77fcf",
+                "reference": "b287d2a16aceffbf6e0295559b39662612b77fcf",
                 "shasum": ""
             },
             "require": {
-                "php": "~5.6.0 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0"
+                "php": "~5.6.0 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0 || ~8.5.0"
             },
             "require-dev": {
                 "cerdic/css-tidy": "^1.7 || ^2.0",
@@ -2357,9 +2357,9 @@
             ],
             "support": {
                 "issues": "https://github.com/ezyang/htmlpurifier/issues",
-                "source": "https://github.com/ezyang/htmlpurifier/tree/v4.18.0"
+                "source": "https://github.com/ezyang/htmlpurifier/tree/v4.19.0"
             },
-            "time": "2024-11-01T03:51:45+00:00"
+            "time": "2025-10-17T16:34:55+00:00"
         },
         {
             "name": "fruitcake/php-cors",