diff --git a/django_inlinecss/css_loaders.py b/django_inlinecss/css_loaders.py
index 9a1aca3..1e86339 100644
--- a/django_inlinecss/css_loaders.py
+++ b/django_inlinecss/css_loaders.py
@@ -34,4 +34,6 @@ def load(self, path):
         """
         Retrieve CSS contents with staticfiles storage
         """
-        return staticfiles_storage.open(path).read().decode("utf-8")
+        with staticfiles_storage.open(path) as file:
+            return file.read().decode("utf-8")
+