diff --git a/App/EvolvStore.php b/App/EvolvStore.php
index c2900ec..5ce3048 100644
--- a/App/EvolvStore.php
+++ b/App/EvolvStore.php
@@ -389,7 +389,7 @@ private function updateGenome(array $value)
             $this->genomeKeyStates['experiments'][$clean['eid']] = &$expMap;
 
             $keys = flattenKeys($alloc['genome'], function ($key) {
-                return !startsWith($key, '_');
+                return is_string($key) && !startsWith($key, '_');
             });
 
             foreach ($keys as $key) {
diff --git a/composer.json b/composer.json
index ce37bef..c5008d5 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "evolv/php-sdk",
     "description": "This is the official PHP client for the Evolv AI optimization platform.",
     "type": "library",
-    "version": "1.0.4",
+    "version": "1.0.5",
     "require-dev": {
         "phpunit/phpunit": "^9.5",
         "phpdocumentor/phpdocumentor":  "v3.1.2",