diff --git a/bin/smp-download.js b/bin/smp-download.js
index ffb1812..21bbc06 100644
--- a/bin/smp-download.js
+++ b/bin/smp-download.js
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
-import { Command, InvalidArgumentError } from '@commander-js/extra-typings'
 import { input, number } from '@inquirer/prompts'
+import { Command, InvalidArgumentError } from 'commander'
 import fs from 'fs'
 import { pipeline } from 'stream/promises'
 
diff --git a/package-lock.json b/package-lock.json
index a938ab4..928e3e8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,6 @@
       "version": "3.0.0",
       "license": "MIT",
       "dependencies": {
-        "@commander-js/extra-typings": "^12.1.0",
         "@fastify/static": "^7.0.4",
         "@inquirer/prompts": "^6.0.1",
         "@mapbox/sphericalmercator": "^1.2.0",
@@ -47,6 +46,7 @@
         "styled-map-package": "bin/smp.js"
       },
       "devDependencies": {
+        "@commander-js/extra-typings": "^12.1.0",
         "@eslint/js": "^9.25.1",
         "@jsquash/jpeg": "^1.4.0",
         "@jsquash/png": "^3.0.1",
@@ -423,6 +423,7 @@
       "version": "12.1.0",
       "resolved": "https://registry.npmjs.org/@commander-js/extra-typings/-/extra-typings-12.1.0.tgz",
       "integrity": "sha512-wf/lwQvWAA0goIghcb91dQYpkLBcyhOhQNqG/VgWhnKzgt+UOMvra7EX/2fv70arm5RW+PUHoQHHDa6/p77Eqg==",
+      "dev": true,
       "license": "MIT",
       "peerDependencies": {
         "commander": "~12.1.0"
diff --git a/package.json b/package.json
index 8456904..8798d68 100644
--- a/package.json
+++ b/package.json
@@ -120,7 +120,6 @@
   "author": "",
   "license": "MIT",
   "dependencies": {
-    "@commander-js/extra-typings": "^12.1.0",
     "@fastify/static": "^7.0.4",
     "@inquirer/prompts": "^6.0.1",
     "@mapbox/sphericalmercator": "^1.2.0",
@@ -154,6 +153,7 @@
     "yocto-queue": "^1.1.1"
   },
   "devDependencies": {
+    "@commander-js/extra-typings": "^12.1.0",
     "@eslint/js": "^9.25.1",
     "@jsquash/jpeg": "^1.4.0",
     "@jsquash/png": "^3.0.1",
diff --git a/types/commander.d.ts b/types/commander.d.ts
new file mode 100644
index 0000000..3cb35e4
--- /dev/null
+++ b/types/commander.d.ts
@@ -0,0 +1,6 @@
+// Set up as ambient module so that the dep does not
+// need to be included as a direct dep.
+// https://github.com/commander-js/extra-typings/issues/91
+declare module 'commander' {
+  export * from '@commander-js/extra-typings'
+}