diff --git a/package-lock.json b/package-lock.json
index 9211e90..fbf934d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,11 +9,11 @@
       "version": "1.0.1",
       "license": "ISC",
       "dependencies": {
-        "d3-array": "^3.1.1",
-        "d3-scale": "^4.0.2"
+        "d3-array": "^3",
+        "d3-scale": "^4"
       },
       "devDependencies": {
-        "@rollup/plugin-node-resolve": "13",
+        "@rollup/plugin-node-resolve": "14",
         "d3": "7",
         "eslint": "7",
         "jsdom": "17",
@@ -149,15 +149,15 @@
       "dev": true
     },
     "node_modules/@rollup/plugin-node-resolve": {
-      "version": "13.0.5",
-      "resolved": "https://registry.npmjs.org/@rollup/plugin-node-resolve/-/plugin-node-resolve-13.0.5.tgz",
-      "integrity": "sha512-mVaw6uxtvuGx/XCI4qBQXsDZJUfyx5vp39iE0J/7Hd6wDhEbjHr6aES7Nr9yWbuE0BY+oKp6N7Bq6jX5NCGNmQ==",
+      "version": "14.0.1",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-node-resolve/-/plugin-node-resolve-14.0.1.tgz",
+      "integrity": "sha512-YvSs0ev00QWTQS8u+yaCJkIUPBgpmBsnzRJFvg8c2chbky85ZKoZtoNuRH0k9rjZT4xpgEPOiVTyeJTj1/iMdQ==",
       "dev": true,
       "dependencies": {
         "@rollup/pluginutils": "^3.1.0",
         "@types/resolve": "1.17.1",
-        "builtin-modules": "^3.1.0",
         "deepmerge": "^4.2.2",
+        "is-builtin-module": "^3.1.0",
         "is-module": "^1.0.0",
         "resolve": "^1.19.0"
       },
@@ -165,7 +165,7 @@
         "node": ">= 10.0.0"
       },
       "peerDependencies": {
-        "rollup": "^2.42.0"
+        "rollup": "^2.78.0"
       }
     },
     "node_modules/@rollup/pluginutils": {
@@ -439,9 +439,9 @@
       "dev": true
     },
     "node_modules/builtin-modules": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.2.0.tgz",
-      "integrity": "sha512-lGzLKcioL90C7wMczpkY0n/oART3MbBa8R9OFGE1rJxoVI86u4WAGfEk8Wjv10eKSyTHVGkSo3bvBylCEtk7LA==",
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.3.0.tgz",
+      "integrity": "sha512-zhaCDicdLuWN5UbN5IMnFqNMhNfo919sH85y2/ea+5Yg9TsTkeZxpL+JLbp6cgYFS4sRLp3YV4S6yDuqVWHYOw==",
       "dev": true,
       "engines": {
         "node": ">=6"
@@ -1922,6 +1922,21 @@
         "node": ">=8"
       }
     },
+    "node_modules/is-builtin-module": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/is-builtin-module/-/is-builtin-module-3.2.0.tgz",
+      "integrity": "sha512-phDA4oSGt7vl1n5tJvTWooWWAsXLY+2xCnxNqvKhGEzujg+A43wPlPOyDg3C8XQHN+6k/JTQWJ/j0dQh/qr+Hw==",
+      "dev": true,
+      "dependencies": {
+        "builtin-modules": "^3.3.0"
+      },
+      "engines": {
+        "node": ">=6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/is-core-module": {
       "version": "2.7.0",
       "resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.7.0.tgz",
@@ -2613,9 +2628,9 @@
       "dev": true
     },
     "node_modules/rollup": {
-      "version": "2.58.0",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.58.0.tgz",
-      "integrity": "sha512-NOXpusKnaRpbS7ZVSzcEXqxcLDOagN6iFS8p45RkoiMqPHDLwJm758UF05KlMoCRbLBTZsPOIa887gZJ1AiXvw==",
+      "version": "2.79.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.79.0.tgz",
+      "integrity": "sha512-x4KsrCgwQ7ZJPcFA/SUu6QVcYlO7uRLfLAy0DSA4NS2eG8japdbpM50ToH7z4iObodRYOJ0soneF0iaQRJ6zhA==",
       "dev": true,
       "bin": {
         "rollup": "dist/bin/rollup"
@@ -3292,15 +3307,15 @@
       "dev": true
     },
     "@rollup/plugin-node-resolve": {
-      "version": "13.0.5",
-      "resolved": "https://registry.npmjs.org/@rollup/plugin-node-resolve/-/plugin-node-resolve-13.0.5.tgz",
-      "integrity": "sha512-mVaw6uxtvuGx/XCI4qBQXsDZJUfyx5vp39iE0J/7Hd6wDhEbjHr6aES7Nr9yWbuE0BY+oKp6N7Bq6jX5NCGNmQ==",
+      "version": "14.0.1",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-node-resolve/-/plugin-node-resolve-14.0.1.tgz",
+      "integrity": "sha512-YvSs0ev00QWTQS8u+yaCJkIUPBgpmBsnzRJFvg8c2chbky85ZKoZtoNuRH0k9rjZT4xpgEPOiVTyeJTj1/iMdQ==",
       "dev": true,
       "requires": {
         "@rollup/pluginutils": "^3.1.0",
         "@types/resolve": "1.17.1",
-        "builtin-modules": "^3.1.0",
         "deepmerge": "^4.2.2",
+        "is-builtin-module": "^3.1.0",
         "is-module": "^1.0.0",
         "resolve": "^1.19.0"
       }
@@ -3524,9 +3539,9 @@
       "dev": true
     },
     "builtin-modules": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.2.0.tgz",
-      "integrity": "sha512-lGzLKcioL90C7wMczpkY0n/oART3MbBa8R9OFGE1rJxoVI86u4WAGfEk8Wjv10eKSyTHVGkSo3bvBylCEtk7LA==",
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-3.3.0.tgz",
+      "integrity": "sha512-zhaCDicdLuWN5UbN5IMnFqNMhNfo919sH85y2/ea+5Yg9TsTkeZxpL+JLbp6cgYFS4sRLp3YV4S6yDuqVWHYOw==",
       "dev": true
     },
     "callsites": {
@@ -4640,6 +4655,15 @@
         "binary-extensions": "^2.0.0"
       }
     },
+    "is-builtin-module": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/is-builtin-module/-/is-builtin-module-3.2.0.tgz",
+      "integrity": "sha512-phDA4oSGt7vl1n5tJvTWooWWAsXLY+2xCnxNqvKhGEzujg+A43wPlPOyDg3C8XQHN+6k/JTQWJ/j0dQh/qr+Hw==",
+      "dev": true,
+      "requires": {
+        "builtin-modules": "^3.3.0"
+      }
+    },
     "is-core-module": {
       "version": "2.7.0",
       "resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.7.0.tgz",
@@ -5159,9 +5183,9 @@
       "dev": true
     },
     "rollup": {
-      "version": "2.58.0",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.58.0.tgz",
-      "integrity": "sha512-NOXpusKnaRpbS7ZVSzcEXqxcLDOagN6iFS8p45RkoiMqPHDLwJm758UF05KlMoCRbLBTZsPOIa887gZJ1AiXvw==",
+      "version": "2.79.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.79.0.tgz",
+      "integrity": "sha512-x4KsrCgwQ7ZJPcFA/SUu6QVcYlO7uRLfLAy0DSA4NS2eG8japdbpM50ToH7z4iObodRYOJ0soneF0iaQRJ6zhA==",
       "dev": true,
       "requires": {
         "fsevents": "~2.3.2"
diff --git a/package.json b/package.json
index 1524114..8b5010a 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "d3-scale": "^4"
   },
   "devDependencies": {
-    "@rollup/plugin-node-resolve": "13",
+    "@rollup/plugin-node-resolve": "14",
     "d3": "7",
     "eslint": "7",
     "jsdom": "17",