diff --git a/profiles/package.mask b/profiles/package.mask
index d51c6c22a30d8..8476225cfcd26 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -33,6 +33,14 @@
 
 #--- END OF EXAMPLES ---
 
+# Sam James <sam@gentoo.org> (2023-11-22)
+# Further bugs with CoW via copy_file_range (bug #917224, https://github.com/openzfs/zfs/issues/15526).
+# The issue is very similar to bug #815469.
+# ZFS 2.2.1 has a workaround but if you haven't already upgraded your pool to
+# use the new block cloning feature, consider using <zfs-2.2 for now.
+=sys-fs/zfs-2.2.0
+=sys-fs/zfs-kmod-2.2.0
+
 # hololeap <hololeap@protonmail.com> (2023-11-19)
 # Package has been masked for a long time, is useless for ::gentoo, and has no
 # reverse dependencies.