diff --git a/vortex-layout/src/layouts/zoned/aggregates/bloom_filter/mod.rs b/vortex-layout/src/layouts/zoned/aggregates/bloom_filter/mod.rs
index 38c718b2f43..a5abad8007a 100644
--- a/vortex-layout/src/layouts/zoned/aggregates/bloom_filter/mod.rs
+++ b/vortex-layout/src/layouts/zoned/aggregates/bloom_filter/mod.rs
@@ -258,6 +258,12 @@ impl Display for BloomOptions {
 /// ### Notice
 ///
 /// Only valid (non-null) scalar values are stored in the filter.
+///
+/// ### Stability
+///
+/// This aggregate is unstable. The hash function, the block layout, and the salt order can still
+/// change without a file format version bump. Do not persist `vortex.bloom_filter.sbbf` partials
+/// in a Vortex file.
 #[derive(Clone, Debug)]
 pub struct BloomFilter;