diff --git a/dist/index.js b/dist/index.js
index 61c32ea..732e2fb 100755
--- a/dist/index.js
+++ b/dist/index.js
@@ -64,6 +64,7 @@ async function main() {
 
   const octokit = new Octokit({
     auth: `token ${GITHUB_TOKEN}`,
+    baseUrl: process.env.GITHUB_API_URL || "https://api.github.com",
     userAgent: "pascalgn/size-label-action"
   });
 
diff --git a/index.js b/index.js
index 1c9989e..3c3b155 100755
--- a/index.js
+++ b/index.js
@@ -58,6 +58,7 @@ async function main() {
 
   const octokit = new Octokit({
     auth: `token ${GITHUB_TOKEN}`,
+    baseUrl: process.env.GITHUB_API_URL || "https://api.github.com",
     userAgent: "pascalgn/size-label-action"
   });