diff --git a/package-lock.json b/package-lock.json
index 0d4b214..b833ff6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2826,9 +2826,12 @@
       }
     },
     "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": "2.11.0",
+      "resolved": "https://registry.npmjs.org/d3-array/-/d3-array-2.11.0.tgz",
+      "integrity": "sha512-26clcwmHQEdsLv34oNKq5Ia9tQ26Y/4HqS3dQzF42QBUqymZJ+9PORcN1G52bt37NsL2ABoX4lvyYZc+A9Y0zw==",
+      "requires": {
+        "internmap": "^1.0.0"
+      }
     },
     "d3-color": {
       "version": "1.4.0",
@@ -4245,6 +4248,11 @@
         }
       }
     },
+    "internmap": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/internmap/-/internmap-1.0.0.tgz",
+      "integrity": "sha512-SdoDWwNOTE2n4JWUsLn4KXZGuZPjPF9yyOGc8bnfWnBQh7BD/l80rzSznKc/r4Y0aQ7z3RTk9X+tV4tHBpu+dA=="
+    },
     "invariant": {
       "version": "2.2.4",
       "resolved": "https://registry.npmjs.org/invariant/-/invariant-2.2.4.tgz",
diff --git a/package.json b/package.json
index a82ddaf..62b73b6 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "svelte": "^3.24.1"
   },
   "dependencies": {
-    "d3-array": "^2.4.0",
+    "d3-array": "^2.11.0",
     "d3-interpolate": "^1.4.0",
     "earcut": "^2.2.2",
     "topojson-client": "^3.1.0"