diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index b1a608e608..07987e57ab 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -153,9 +153,9 @@ jobs:
           name: package
           path: .
 
-      # Note: We currently expect "FalseCJS" failures for Node16 + `moduleResolution: "node16"
+      # Note: We currently expect "FalseESM" failures for Node16 + `moduleResolution: "node16"
       - name: Run are-the-types-wrong
-        run: npx @arethetypeswrong/cli ./package.tgz --format table --ignore-rules false-cjs
+        run: npx @arethetypeswrong/cli ./package.tgz --format table --ignore-rules false-esm
 
   test-published-artifact:
     name: Test Published Artifact ${{ matrix.example }}
diff --git a/package.json b/package.json
index 7a5c35f618..3adbba8018 100644
--- a/package.json
+++ b/package.json
@@ -25,11 +25,11 @@
   ],
   "main": "dist/cjs/redux.cjs",
   "module": "dist/redux.legacy-esm.js",
-  "types": "dist/redux.d.ts",
+  "types": "dist/redux.d.mts",
   "exports": {
     "./package.json": "./package.json",
     ".": {
-      "types": "./dist/redux.d.ts",
+      "types": "./dist/redux.d.mts",
       "import": "./dist/redux.mjs",
       "default": "./dist/cjs/redux.cjs"
     }
diff --git a/tsup.config.ts b/tsup.config.ts
index 739de93ab9..bfffd883f0 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -1,7 +1,8 @@
-import { defineConfig, Options } from 'tsup'
+import type { Options } from 'tsup'
+import { defineConfig } from 'tsup'
 
 import * as babel from '@babel/core'
-import { Plugin } from 'esbuild'
+import type { Plugin } from 'esbuild'
 import { getBuildExtensions } from 'esbuild-extra'
 import fs from 'fs'
 
@@ -41,10 +42,10 @@ export default defineConfig(options => {
     {
       ...commonOptions,
       format: ['esm'],
-      outExtension: () => ({ js: '.mjs' }),
+      outExtension: () => ({ js: '.mjs' }), // Add dts: '.d.ts' when egoist/tsup#1053 lands
       dts: true,
       clean: true,
-      onSuccess() {
+      async onSuccess() {
         // Support Webpack 4 by pointing `"module"` to a file with a `.js` extension
         fs.copyFileSync('dist/redux.mjs', 'dist/redux.legacy-esm.js')
       }