diff --git a/hubkit.js b/hubkit.js
index b3f6fee..3cee713 100644
--- a/hubkit.js
+++ b/hubkit.js
@@ -467,8 +467,10 @@ if (typeof require !== 'undefined') {
                 }
               }
               if (cacheable) {
-                const size = rawData ? rawData.length : (res.data ?
-                  (res.data.size || res.data.byteLength) : 1);
+                const size =
+                  rawData ? rawData.length || rawData.size || rawData.byteLength :
+                  res.data ? res.data.size || res.data.byteLength :
+                  1;
                 if (options.stats) options.stats.record(false, size);
                 if (res.status === 200 && (res.headers.etag || res.headers['cache-control']) &&
                     size <= options.cache.maxSize * options.maxItemSizeRatio) {
diff --git a/package.json b/package.json
index 305a069..fc1f343 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hubkit",
-  "version": "6.0.0",
+  "version": "6.0.1",
   "description": "GitHub API library for JavaScript, promise-based, for both NodeJS and the browser",
   "main": "index.js",
   "types": "index.d.ts",