diff --git a/index.js b/index.js
index 8c8948c..a845af5 100644
--- a/index.js
+++ b/index.js
@@ -25,27 +25,25 @@ Toolkit.run(async tools => {
     version = 'minor'
   }
 
-  const exec = str => {
-    return process.stdout.write(execSync(str))
-  }
-
   try {
     const current = pkg.version.toString()
-    exec('git checkout master')
-    exec(`npm version --allow-same-version=true --git-tag-version=false ${current} `)
+    await tools.runInWorkspace('git', ['checkout', 'master'])
+    await tools.runInWorkspace('npm',
+      ['version', '--allow-same-version=true', '--git-tag-version=false', current, 'master'])
     console.log('current:', current, '/', 'version:', version)
     const newVersion = execSync(`npm version --git-tag-version=false ${version}`).toString()
     console.log('new version:', newVersion)
-    exec(`git commit -a -m 'ci: ${commitMessage} ${newVersion}'`)
+    await tools.runInWorkspace('git', ['commit', '-a', '-m', `'ci: ${commitMessage} ${newVersion}'`])
 
     const remoteRepo = `https://${process.env.GITHUB_ACTOR}:${process.env.GITHUB_TOKEN}@github.com/${process.env.GITHUB_REPOSITORY}.git`
     console.log('remoteRepo:', remoteRepo)
 
-    exec(`git tag ${newVersion}`)
-    exec(`git push "${remoteRepo}" --follow-tags`)
-    exec(`git push "${remoteRepo}" --tags`)
+    await tools.runInWorkspace('git', ['tag', '-a', newVersion])
+    await tools.runInWorkspace('git', ['push', `"${remoteRepo}"`, '--follow-tags'])
+    await tools.runInWorkspace('git', ['push', `"${remoteRepo}"`, '--tags'])
   } catch (e) {
-    tools.exit.failure(`Failed: ${e.toString()}`)
+    tools.log.fatal(e)
+    tools.exit.failure('Failed to bump version')
   }
   tools.exit.success('Version bumped!')
 })