diff --git a/src/leaflet/package.json b/src/leaflet/package.json
index fbe97719..bab08563 100644
--- a/src/leaflet/package.json
+++ b/src/leaflet/package.json
@@ -49,6 +49,7 @@
     "omit.js": "^2.0.2",
     "proj4": "^2.6.0",
     "resize-detector": "^0.2.0",
+    "simple-statistics": "^7.8.3",
     "swiper": "^6.8.4",
     "tinycolor2": "^1.4.2",
     "utm": "^1.1.1",
diff --git a/src/mapboxgl/package.json b/src/mapboxgl/package.json
index 0232a794..901a7c63 100644
--- a/src/mapboxgl/package.json
+++ b/src/mapboxgl/package.json
@@ -55,6 +55,7 @@
     "proj4": "^2.6.0",
     "resize-detector": "^0.2.0",
     "shapefile": "^0.6.6",
+    "simple-statistics": "^7.8.3",
     "swiper": "^6.8.4",
     "three": "0.129.0",
     "three-wtm": "1.0.0",