diff --git a/lib/request.js b/lib/request.js
index a46ff9b..7d7234d 100644
--- a/lib/request.js
+++ b/lib/request.js
@@ -9,7 +9,10 @@ if (process.env.NODE_USE_ENV_PROXY == null) {
 // Attempt to configure undici global dispatcher (used by octokit under the hood)
 // if a proxy environment variable is present. Failures are non-fatal.
 const __proxyUrl =
-  process.env.HTTPS_PROXY || process.env.HTTP_PROXY || process.env.ALL_PROXY;
+  process.env.https_proxy ||
+  process.env.HTTPS_PROXY ||
+  process.env.http_proxy ||
+  process.env.HTTP_PROXY;
 if (__proxyUrl) {
   (async () => {
     try {