diff --git a/lib/release/release-manager.js b/lib/release/release-manager.js
index 91b673a9..fb4ae84e 100644
--- a/lib/release/release-manager.js
+++ b/lib/release/release-manager.js
@@ -1,4 +1,3 @@
-const { Octokit } = require('@octokit/rest')
 const core = require('@actions/core')
 const { join } = require('path')
 const semver = require('semver')
@@ -9,17 +8,16 @@ const { request: fetch } = require('undici')
 const { getPublishTag, block, noop } = require('./util')
 
 class ReleaseManager {
-  #octokit
-  #owner
-  #repo
-  #cwd
-  #pr
   #backport
+  #cwd
   #defaultTag
+  #info
   #lockfile
+  #owner
+  #pr
   #publish
-
-  #info
+  #repo
+  #token
 
   constructor({ token, repo, cwd = process.cwd(), pr, backport, defaultTag, lockfile, publish, silent }) {
     assert(token, 'GITHUB_TOKEN is required')
@@ -28,17 +26,16 @@ class ReleaseManager {
     assert(pr, 'pr is required')
     assert(defaultTag, 'defaultTag is required')
 
-    this.#octokit = new Octokit({ auth: token })
-    this.#owner = repo.split('/')[0]
-    this.#repo = repo.split('/')[1]
-    this.#cwd = cwd
-    this.#pr = pr
     this.#backport = backport
+    this.#cwd = cwd
     this.#defaultTag = defaultTag
+    this.#info = silent ? noop : core.info
     this.#lockfile = lockfile
+    this.#owner = repo.split('/')[0]
+    this.#pr = pr
     this.#publish = publish
-
-    this.#info = silent ? noop : core.info
+    this.#repo = repo.split('/')[1]
+    this.#token = token
   }
 
   static async run(options) {
@@ -47,7 +44,9 @@ class ReleaseManager {
   }
 
   async run() {
-    const { data: pullRequest } = await this.#octokit.rest.pulls.get({
+    const { Octokit } = await import('@octokit/rest')
+    const octokit = new Octokit({ auth: this.#token })
+    const { data: pullRequest } = await octokit.rest.pulls.get({
       owner: this.#owner,
       repo: this.#repo,
       pull_number: this.#pr,