diff --git a/profiles/package.mask b/profiles/package.mask
index 9a6994f540..f503b1bc12 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -14,6 +14,11 @@
 
 # New entries go on top.
 
+# Julien Roy <julien@jroy.ca> (2024-04-13)
+# Mask stale/unmaintained packages for removal in 30 days
+# Unmaintained upstream, runtime failure on >=dev-lang/python-3.9
+dev-python/clufter
+
 # Julien Roy <julien@jroy.ca> (2024-04-13)
 # Depends on last rited dev-python/future
 # Masked for removal in 30 days