diff --git a/mark3/package-lock.json b/mark3/package-lock.json
index bc922e3..7bb6bc8 100644
--- a/mark3/package-lock.json
+++ b/mark3/package-lock.json
@@ -10,7 +10,7 @@
       "dependencies": {
         "@anthropic-ai/sdk": "^0.20.1",
         "pdfjs-dist": "^2.9.359",
-        "preact": "^10.19.6",
+        "preact": "^10.22.1",
         "preact-router": "^4.1.2",
         "sass": "^1.74.1"
       },
@@ -2399,9 +2399,10 @@
       }
     },
     "node_modules/preact": {
-      "version": "10.20.1",
-      "resolved": "https://registry.npmjs.org/preact/-/preact-10.20.1.tgz",
-      "integrity": "sha512-JIFjgFg9B2qnOoGiYMVBtrcFxHqn+dNXbq76bVmcaHYJFYR4lW67AOcXgAYQQTDYXDOg/kTZrKPNCdRgJ2UJmw==",
+      "version": "10.22.1",
+      "resolved": "https://registry.npmjs.org/preact/-/preact-10.22.1.tgz",
+      "integrity": "sha512-jRYbDDgMpIb5LHq3hkI0bbl+l/TQ9UnkdQ0ww+lp+4MMOdqaUYdFc5qeyP+IV8FAd/2Em7drVPeKdQxsiWCf/A==",
+      "license": "MIT",
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/preact"
diff --git a/mark3/package.json b/mark3/package.json
index 4526d46..6c4e388 100644
--- a/mark3/package.json
+++ b/mark3/package.json
@@ -11,7 +11,7 @@
   "dependencies": {
     "@anthropic-ai/sdk": "^0.20.1",
     "pdfjs-dist": "^2.9.359",
-    "preact": "^10.19.6",
+    "preact": "^10.22.1",
     "preact-router": "^4.1.2",
     "sass": "^1.74.1"
   },