diff --git a/vortex-file/src/lib.rs b/vortex-file/src/lib.rs
index 6ef1be9b58c..38fe554c664 100644
--- a/vortex-file/src/lib.rs
+++ b/vortex-file/src/lib.rs
@@ -182,6 +182,11 @@ pub fn register_default_encodings(session: &mut VortexSession) {
         arrays.register(ZigZagVTable::ID, ZigZagVTable);
         #[cfg(feature = "zstd")]
         arrays.register(vortex_zstd::ZstdVTable::ID, vortex_zstd::ZstdVTable);
+        #[cfg(all(feature = "zstd", feature = "unstable_encodings"))]
+        arrays.register(
+            vortex_zstd::ZstdBuffersVTable::ID,
+            vortex_zstd::ZstdBuffersVTable,
+        );
     }
 
     // Eventually all encodings crates should expose an initialize function. For now it's only
diff --git a/vortex-test/e2e/Cargo.toml b/vortex-test/e2e/Cargo.toml
index 3182d95a93b..712bffae73e 100644
--- a/vortex-test/e2e/Cargo.toml
+++ b/vortex-test/e2e/Cargo.toml
@@ -15,6 +15,9 @@ version = { workspace = true }
 [lints]
 workspace = true
 
+[features]
+unstable_encodings = ["vortex/unstable_encodings"]
+
 [dependencies]
 futures = { workspace = true }
 rstest = { workspace = true }
diff --git a/vortex-test/e2e/src/lib.rs b/vortex-test/e2e/src/lib.rs
index f97eb4e398d..2e8d3c77be0 100644
--- a/vortex-test/e2e/src/lib.rs
+++ b/vortex-test/e2e/src/lib.rs
@@ -25,6 +25,9 @@ mod tests {
             PrimitiveArray::new(Buffer::from_iter(values), Validity::NonNullable).into_array();
 
         // Write in parallel and verify all sizes match expected
+        #[cfg(feature = "unstable_encodings")]
+        const EXPECTED_SIZE: usize = 216188;
+        #[cfg(not(feature = "unstable_encodings"))]
         const EXPECTED_SIZE: usize = 216156;
         let futures: Vec<_> = (0..5)
             .map(|_| {