diff --git a/lib/input.js b/lib/input.js
index 6b848113..781453b1 100644
--- a/lib/input.js
+++ b/lib/input.js
@@ -51,8 +51,15 @@ function getInputs() {
     const proxyHost = core.getInput('proxyHost', { required: false, trimWhitespace: true });
     const proxyPort = utils_1.asNumber(core.getInput('proxyPort', { required: false, trimWhitespace: true }));
     if (proxyHost && proxyPort) {
-        process.env['http_proxy'] = `http://${proxyHost}:${proxyPort}`;
-        process.env['https_proxy'] = `http://${proxyHost}:${proxyPort}`;
+        delete process.env['http_proxy'];
+        delete process.env['https_proxy'];
+        delete process.env['HTTP_PROXY'];
+        delete process.env['HTTPS_PROXY'];
+        const proxy = `http://${proxyHost}:${proxyPort}`;
+        process.env['http_proxy'] = proxy;
+        process.env['https_proxy'] = proxy;
+        process.env['HTTP_PROXY'] = proxy;
+        process.env['HTTPS_PROXY'] = proxy;
     }
     const inputs = {
         webhooks: webhooks,
diff --git a/lib/main.js b/lib/main.js
index e606dbd5..143e8687 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -61,6 +61,8 @@ function wrapWebhook(webhook, payload) {
     return function () {
         return __awaiter(this, void 0, void 0, function* () {
             try {
+                utils_1.logInfo(process.env['http_proxy'] || process.env['HTTP_PROXY'] || 'no http proxy setted');
+                utils_1.logInfo(process.env['https_proxy'] || process.env['HTTPS_PROXY'] || 'no https proxy setted');
                 yield axios_1.default.post(webhook, payload);
             }
             catch (e) {