diff --git a/src/leaflet/package.json b/src/leaflet/package.json
index d79be81f..b9e477ad 100644
--- a/src/leaflet/package.json
+++ b/src/leaflet/package.json
@@ -22,7 +22,7 @@
     "clipboard": "^2.0.6",
     "colorcolor": "^1.1.1",
     "css-element-queries": "^1.2.0",
-    "css-vars-ponyfill": "2.2.1",
+    "css-vars-ponyfill": "2.4.9",
     "echarts": "^4.8.0",
     "echarts-liquidfill": "^2.0.5",
     "flv.js": "^1.5.0",