diff --git a/src/services/request.js b/src/services/request.js
index 0334c09865..610e44f515 100644
--- a/src/services/request.js
+++ b/src/services/request.js
@@ -63,10 +63,15 @@ function exec(opts) {
                 }
 
                 let responseStr = '';
+                let chunks = [];
 
-                response.on('data', chunk => responseStr += chunk);
+                response.on('data', chunk => chunks.push(chunk));
 
                 response.on('end', () => {
+                    // use Buffer instead of string concatenation to avoid implicit decoding for each chunk
+                    // decode the entire data chunks explicitly as utf-8
+                    responseStr = Buffer.concat(chunks).toString('utf-8')
+
                     if ([200, 201, 204].includes(response.statusCode)) {
                         try {
                             const jsonObj = responseStr.trim() ? JSON.parse(responseStr) : null;