diff --git a/.gitignore b/.gitignore
index 0d28d5f..41f15ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,4 +13,6 @@ coverage
 
 yarn.lock
 coverage.lcov
-package-lock.json
\ No newline at end of file
+package-lock.json
+
+output.json
diff --git a/package.json b/package.json
index 4d91be1..00bc337 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "3.0.0",
+  "version": "3.0.1",
   "name": "feed-reader",
   "description": "Parse ATOM/RSS data from given feed url",
   "homepage": "https://www.npmjs.com/package/feed-reader",
@@ -29,7 +29,7 @@
   },
   "devDependencies": {
     "jest": "^27.3.1",
-    "nock": "^13.1.4"
+    "nock": "^13.2.1"
   },
   "keywords": [
     "extractor",
diff --git a/src/utils/retrieve.js b/src/utils/retrieve.js
index 2a6e7d8..84ac36d 100644
--- a/src/utils/retrieve.js
+++ b/src/utils/retrieve.js
@@ -19,7 +19,7 @@ module.exports = async (url) => {
     }
 
     const contentType = res.headers['content-type'] || ''
-    if (!contentType || !contentType.includes('/xml')) {
+    if (!contentType || !contentType.includes('xml')) {
       error(`Got invalid content-type (${contentType}) from "${url}"`)
       return null
     }