diff --git a/phet/info.json b/phet/info.json
index 0878e11..c38526f 100644
--- a/phet/info.json
+++ b/phet/info.json
@@ -1,5 +1,5 @@
 {
   "app_name": "PhET",
-  "zim_url": "https://download.kiwix.org/zim/phet/phet_mul_2018-09.zim",
+  "zim_url": "https://download.kiwix.org/zim/phet/phet_mul_2019-11.zim",
   "enforced_lang": "en"
 }