diff --git a/package-lock.json b/package-lock.json
index cf848c2..65c2984 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,9 +7,12 @@
       "dependencies": {
         "@observablehq/framework": "^1.13.0",
         "d3": "^7.9.0",
+        "d3-color": "^3.1.0",
         "d3-dsv": "^3.0.1",
         "d3-time-format": "^4.1.0",
-        "jsdom": "^26.0.0"
+        "jsdom": "^26.0.0",
+        "lodash.shuffle": "^4.2.0",
+        "random": "^5.1.1"
       },
       "devDependencies": {
         "rimraf": "^5.0.5"
@@ -2476,6 +2479,11 @@
         "uc.micro": "^2.0.0"
       }
     },
+    "node_modules/lodash.shuffle": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/lodash.shuffle/-/lodash.shuffle-4.2.0.tgz",
+      "integrity": "sha512-V/rTAABKLFjoecTZjKSv+A1ZomG8hZg8hlgeG6wwQVD9AGv+10zqqSf6mFq2tVA703Zd5R0YhSuSlXA+E/Ei+Q=="
+    },
     "node_modules/lru-cache": {
       "version": "10.4.3",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.4.3.tgz",
@@ -2790,6 +2798,14 @@
       "resolved": "https://registry.npmjs.org/queue-tick/-/queue-tick-1.0.1.tgz",
       "integrity": "sha512-kJt5qhMxoszgU/62PLP1CJytzd2NKetjSRnyuj31fDd3Rlcz3fzlFdFLD1SItunPwyqEOkca6GbV612BWfaBag=="
     },
+    "node_modules/random": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/random/-/random-5.1.1.tgz",
+      "integrity": "sha512-iidvORUvXY1ItoYxO0eduHCKl22QV0G6460vRHe862dUagJKPhRyjUGwK8ioOCG4NRuFvExHFpqMngsnr2miwA==",
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/range-parser": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
diff --git a/package.json b/package.json
index fc50128..1f654e7 100644
--- a/package.json
+++ b/package.json
@@ -11,9 +11,12 @@
   "dependencies": {
     "@observablehq/framework": "^1.13.0",
     "d3": "^7.9.0",
+    "d3-color": "^3.1.0",
     "d3-dsv": "^3.0.1",
     "d3-time-format": "^4.1.0",
-    "jsdom": "^26.0.0"
+    "jsdom": "^26.0.0",
+    "lodash.shuffle": "^4.2.0",
+    "random": "^5.1.1"
   },
   "devDependencies": {
     "rimraf": "^5.0.5"
diff --git a/src/components/palettes.js b/src/components/palettes.js
index 9acdd11..7d01ac5 100644
--- a/src/components/palettes.js
+++ b/src/components/palettes.js
@@ -1,7 +1,7 @@
 
-import * as d3 from "npm:d3-color";
-import shuffle from "npm:lodash.shuffle";
-import random from "npm:random";
+import * as d3 from "d3-color";
+import shuffle from "lodash.shuffle";
+import random from "random";
 
 const PALETTES = new Map([
 	[ "random RGB", palette_random ],