diff --git a/nomad/app/api/archive.py b/nomad/app/api/archive.py
index 19713b7061e27e07d3a0362d9d4f13f0918c8c87..f620a35cc9cff7463ce6b3b9a636095a3e7fb659 100644
--- a/nomad/app/api/archive.py
+++ b/nomad/app/api/archive.py
@@ -24,7 +24,6 @@ from flask import send_file
 from flask_restplus import abort, Resource
 import json
 import importlib
-import contextlib
 
 import nomad_meta_info
 
diff --git a/nomad/app/api/raw.py b/nomad/app/api/raw.py
index 3ae09689d243798e623e63cedef3199dccd8ebe8..1aa4429e9f2bf0a6b7226d8628d7cd9063359365 100644
--- a/nomad/app/api/raw.py
+++ b/nomad/app/api/raw.py
@@ -22,7 +22,6 @@ from io import BytesIO
 from flask import request, send_file
 from flask_restplus import abort, Resource, fields
 import magic
-import contextlib
 import fnmatch
 import json
 import gzip