diff --git a/src/replit/maqpy/files.py b/src/replit/maqpy/files.py
index 259aa42..6e299fd 100644
--- a/src/replit/maqpy/files.py
+++ b/src/replit/maqpy/files.py
@@ -26,6 +26,6 @@ class File(flask.Response):
                 self.content = f.read()
 
             if not no_cache:
-                cache.add_to_cache(filename, self.content)
+                cache[filename] = self.content
 
         super().__init__(self.content)