diff --git a/composer.json b/composer.json
index 1ce2e64..30398b0 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
         "drupal/lagoon_logs": "2.1.1",
         "drupal/redis": "1.7.0",
         "drupal/search_api": "1.30.0",
-        "drupal/search_api_solr": "4.3.1",
+        "drupal/search_api_solr": "4.3.5",
         "drush/drush": "11.6.0",
         "zaporylie/composer-drupal-optimizations": "1.2.0"
     },