diff --git a/build.py b/build.py
index 2474222..affc93e 100644
--- a/build.py
+++ b/build.py
@@ -69,10 +69,11 @@ def update_version_in_expo(version: str):
         data['expo']['version'] = version
         config_file.seek(0)
         config_file.write(json.dumps(data, indent=2, ensure_ascii=False))
+        config_file.close()
 
 
 def main():
-    #API_URL = 'http://192.168.1.101:5000/application'
+    # API_URL = 'http://192.168.1.101:5000/application'
     API_URL = 'https://assemblr.denco.store/application'
     API_KEY = 'AF9A20DD9264C134CDA0ADACED834368'
     APPLICATION_NAME = 'assemblr'
@@ -82,6 +83,7 @@ def main():
     current_version = application_api.get_current_version()
     new_version = prompt_new_version(current_version, APPLICATION_NAME)
     update_version_in_expo(new_version)
+
     print('Starting building...')
     subprocess.run(BUILD_COMMAND, shell=True, text=True, capture_output=False)
     print('Build ended successfully.')