diff --git a/steam-workshop-download b/steam-workshop-download
index 2ff5d97..83ee6c1 100755
--- a/steam-workshop-download
+++ b/steam-workshop-download
@@ -55,11 +55,16 @@ for item in response.json()['response']['publishedfiledetails']:
     response = session.get(item['file_url'], stream=True)
     response.raise_for_status()
 
+    # one chunk at a time
     with open(target_path, 'wb') as file:
         for chunk in response.iter_content(chunk_size=65_536):
             print('.', end='', flush=True)
             if chunk:
                 file.write(chunk)
 
+    # update modify time
     print(' done', flush=True)
     utime(target_path, (getatime(target_path), item['time_updated']))
+
+# close session
+session.close()