diff --git a/lib/run-task.js b/lib/run-task.js
index 18d8aab..5a12931 100644
--- a/lib/run-task.js
+++ b/lib/run-task.js
@@ -133,68 +133,69 @@ function cleanTaskArg (arg) {
  *   This promise object has an extra method: `abort()`.
  * @private
  */
-module.exports = async function runTask (task, options) {
+module.exports = function runTask (task, options) {
   let cp = null
-  const ansiStyles = (await ansiStylesPromise).default
   const promise = new Promise((resolve, reject) => {
-    const stdin = options.stdin
-    const stdout = wrapLabeling(task, options.stdout, options.labelState, ansiStyles)
-    const stderr = wrapLabeling(task, options.stderr, options.labelState, ansiStyles)
-    const stdinKind = detectStreamKind(stdin, process.stdin)
-    const stdoutKind = detectStreamKind(stdout, process.stdout)
-    const stderrKind = detectStreamKind(stderr, process.stderr)
-    const spawnOptions = { stdio: [stdinKind, stdoutKind, stderrKind] }
-
-    // Print task name.
-    if (options.printName && stdout != null) {
-      stdout.write(createHeader(
-        task,
-        options.packageInfo,
-        options.stdout.isTTY,
-        ansiStyles
-      ))
-    }
-
-    // Execute.
-    const npmPath = options.npmPath || path.basename(process.env.npm_execpath).startsWith('npx') // eslint-disable-line no-process-env
-      ? path.join(path.dirname(process.env.npm_execpath), path.basename(process.env.npm_execpath).replace('npx', 'npm')) // eslint-disable-line no-process-env
-      : process.env.npm_execpath // eslint-disable-line no-process-env
-    const npmPathIsJs = typeof npmPath === 'string' && /\.m?js/.test(path.extname(npmPath))
-    const execPath = (npmPathIsJs ? process.execPath : npmPath || 'npm')
-    const isYarn = process.env.npm_config_user_agent && process.env.npm_config_user_agent.startsWith('yarn') // eslint-disable-line no-process-env
-    const spawnArgs = ['run']
-
-    if (npmPathIsJs) {
-      spawnArgs.unshift(npmPath)
-    }
-    if (!isYarn) {
-      Array.prototype.push.apply(spawnArgs, options.prefixOptions)
-    } else if (options.prefixOptions.indexOf('--silent') !== -1) {
-      spawnArgs.push('--silent')
-    }
-    Array.prototype.push.apply(spawnArgs, parseArgs(task).map(cleanTaskArg))
-
-    cp = spawn(execPath, spawnArgs, spawnOptions)
-
-    // Piping stdio.
-    if (stdinKind === 'pipe') {
-      stdin.pipe(cp.stdin)
-    }
-    if (stdoutKind === 'pipe') {
-      cp.stdout.pipe(stdout, { end: false })
-    }
-    if (stderrKind === 'pipe') {
-      cp.stderr.pipe(stderr, { end: false })
-    }
-
-    // Register
-    cp.on('error', (err) => {
-      cp = null
-      reject(err)
-    })
-    cp.on('close', (code, signal) => {
-      cp = null
-      resolve({ task, code, signal })
+    ansiStylesPromise.then(({ default: ansiStyles }) => {
+      const stdin = options.stdin
+      const stdout = wrapLabeling(task, options.stdout, options.labelState, ansiStyles)
+      const stderr = wrapLabeling(task, options.stderr, options.labelState, ansiStyles)
+      const stdinKind = detectStreamKind(stdin, process.stdin)
+      const stdoutKind = detectStreamKind(stdout, process.stdout)
+      const stderrKind = detectStreamKind(stderr, process.stderr)
+      const spawnOptions = { stdio: [stdinKind, stdoutKind, stderrKind] }
+
+      // Print task name.
+      if (options.printName && stdout != null) {
+        stdout.write(createHeader(
+          task,
+          options.packageInfo,
+          options.stdout.isTTY,
+          ansiStyles
+        ))
+      }
+
+      // Execute.
+      const npmPath = options.npmPath || path.basename(process.env.npm_execpath).startsWith('npx') // eslint-disable-line no-process-env
+        ? path.join(path.dirname(process.env.npm_execpath), path.basename(process.env.npm_execpath).replace('npx', 'npm')) // eslint-disable-line no-process-env
+        : process.env.npm_execpath // eslint-disable-line no-process-env
+      const npmPathIsJs = typeof npmPath === 'string' && /\.m?js/.test(path.extname(npmPath))
+      const execPath = (npmPathIsJs ? process.execPath : npmPath || 'npm')
+      const isYarn = process.env.npm_config_user_agent && process.env.npm_config_user_agent.startsWith('yarn') // eslint-disable-line no-process-env
+      const spawnArgs = ['run']
+
+      if (npmPathIsJs) {
+        spawnArgs.unshift(npmPath)
+      }
+      if (!isYarn) {
+        Array.prototype.push.apply(spawnArgs, options.prefixOptions)
+      } else if (options.prefixOptions.indexOf('--silent') !== -1) {
+        spawnArgs.push('--silent')
+      }
+      Array.prototype.push.apply(spawnArgs, parseArgs(task).map(cleanTaskArg))
+
+      cp = spawn(execPath, spawnArgs, spawnOptions)
+
+      // Piping stdio.
+      if (stdinKind === 'pipe') {
+        stdin.pipe(cp.stdin)
+      }
+      if (stdoutKind === 'pipe') {
+        cp.stdout.pipe(stdout, { end: false })
+      }
+      if (stderrKind === 'pipe') {
+        cp.stderr.pipe(stderr, { end: false })
+      }
+
+      // Register
+      cp.on('error', (err) => {
+        cp = null
+        reject(err)
+      })
+      cp.on('close', (code, signal) => {
+        cp = null
+        resolve({ task, code, signal })
+      })
     })
   })
 
@@ -205,5 +206,5 @@ module.exports = async function runTask (task, options) {
     }
   }
 
-  return await promise
+  return promise
 }