diff --git a/src/main.ts b/src/main.ts
index 40dc9d1..c337fdc 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -2,6 +2,7 @@ import * as core from '@actions/core'
 import * as exec from '@actions/exec'
 import * as fs from 'fs'
 import * as github from '@actions/github'
+import {GitHub} from '@actions/github/lib/utils'
 import * as tc from '@actions/tool-cache'
 import {install_nextflow, nextflow_bin_url, release_data} from './functions'
 
@@ -17,7 +18,7 @@ async function run(): Promise<void> {
   let resolved_version = ''
 
   // Setup the API
-  let octokit = {}
+  let octokit: InstanceType<typeof GitHub> | undefined
   try {
     octokit = github.getOctokit(token)
   } catch (e: unknown) {
@@ -31,7 +32,9 @@ async function run(): Promise<void> {
   // Get the release info for the desired release
   let release = {}
   try {
-    release = await release_data(version, octokit)
+    if (octokit !== undefined) {
+      release = await release_data(version, octokit)
+    }
     resolved_version = release['tag_name']
     core.info(
       `Input version '${version}' resolved to Nextflow ${release['name']}`