diff --git a/gitlabreleaseuploader.py b/gitlabreleaseuploader.py
index fde4871..c18a8e1 100755
--- a/gitlabreleaseuploader.py
+++ b/gitlabreleaseuploader.py
@@ -100,23 +100,24 @@ uploadUrl = "%s/api/v4/projects/%s/uploads" % (instanceUrl, projectId)
 headers = {"PRIVATE-TOKEN": privateToken}
 
 assets = []
-for f in filesToUpload:
-    files = {"file": open(f, 'rb')}
+for filename in filesToUpload:
+    with open(filename, 'rb') as filehandle:
+        files = {"file": filehandle}
 
-    uploadResult = requests.post(uploadUrl, files=files, headers=headers, verify=caBundle)
+        uploadResult = requests.post(uploadUrl, files=filehandle, headers=headers, verify=caBundle)
 
-    if uploadResult.status_code != 201:
-        print(uploadResult)
-        print(uploadResult.text)
-        raise Exception('Unable to upload file to Gitlab')
+        if uploadResult.status_code != 201:
+            print(uploadResult)
+            print(uploadResult.text)
+            raise Exception('Unable to upload file to Gitlab')
 
-    if verbose:
-        print(uploadResult)
-        print(uploadResult.text)
-    print('File {} successfully uploaded'.format(f))
+        if verbose:
+            print(uploadResult)
+            print(uploadResult.text)
+        print('File {} successfully uploaded'.format(filename))
 
-    url = projectUrl + json.loads(uploadResult.text)['url']
-    assets.append({'name': f, 'url': url})
+        url = projectUrl + json.loads(uploadResult.text)['url']
+        assets.append({'name': filename, 'url': url})
 
 # --- create release tag
 if createReleaseTag: