diff --git a/package-lock.json b/package-lock.json
index 0d4b214..5cb2671 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2826,9 +2826,9 @@
       }
     },
     "d3-array": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-2.4.0.tgz",
-      "integrity": "sha512-KQ41bAF2BMakf/HdKT865ALd4cgND6VcIztVQZUTt0+BH3RWy6ZYnHghVXf6NFjt2ritLr8H1T8LreAAlfiNcw=="
+      "version": "2.9.0",
+      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-2.9.0.tgz",
+      "integrity": "sha512-yOokB8GozB6GAubW9n7phLdRugC8TgEjF6V1cX/q78L80d2tLirUnc0jvDSSF622JJJTmtnJOe9+WKs+yS5GFQ=="
     },
     "d3-color": {
       "version": "1.4.0",
diff --git a/package.json b/package.json
index a82ddaf..fa65495 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "svelte": "^3.24.1"
   },
   "dependencies": {
-    "d3-array": "^2.4.0",
+    "d3-array": "^2.9.0",
     "d3-interpolate": "^1.4.0",
     "earcut": "^2.2.2",
     "topojson-client": "^3.1.0"