diff --git a/Python.gitignore b/Python.gitignore
index 4c1e8f74..608091eb 100644
--- a/Python.gitignore
+++ b/Python.gitignore
@@ -80,7 +80,8 @@ target/
 
 # marimo notebook
 #   marimo maintains a cache of binary data in __marimo__/cache/
-__marimo__/cache/
+#   in directories containing notebooks.
+**/__marimo__/cache/
 
 # IPython
 profile_default/