diff --git a/Cargo.toml b/Cargo.toml
index 5562e6605..330d96362 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -57,7 +57,7 @@ lru = "0.7.5"
 fastdivide = "0.4.0"
 itertools = "0.10.3"
 measure_time = "0.8.2"
-serde_cbor = { version = "0.11.2", optional = true }
+ciborium = { version = "0.2", optional = true}
 async-trait = "0.1.53"
 arc-swap = "1.5.0"
 
@@ -101,7 +101,7 @@ zstd-compression = ["zstd"]
 failpoints = ["fail/failpoints"]
 unstable = [] # useful for benches.
 
-quickwit = ["serde_cbor"]
+quickwit = ["ciborium"]
 
 [workspace]
 members = ["query-grammar", "bitpacker", "common", "fastfield_codecs", "ownedbytes"]
diff --git a/src/termdict/sstable_termdict/sstable/sstable_index.rs b/src/termdict/sstable_termdict/sstable/sstable_index.rs
index dfcf7a1a4..eef9123c1 100644
--- a/src/termdict/sstable_termdict/sstable/sstable_index.rs
+++ b/src/termdict/sstable_termdict/sstable/sstable_index.rs
@@ -13,7 +13,7 @@ pub struct SSTableIndex {
 
 impl SSTableIndex {
     pub(crate) fn load(data: &[u8]) -> Result<SSTableIndex, DataCorruption> {
-        serde_cbor::de::from_slice(data)
+        ciborium::de::from_reader(data)
             .map_err(|_| DataCorruption::comment_only("SSTable index is corrupted"))
     }
 
@@ -85,8 +85,8 @@ impl SSTableIndexBuilder {
         })
     }
 
-    pub fn serialize(&self, wrt: &mut dyn io::Write) -> io::Result<()> {
-        serde_cbor::ser::to_writer(wrt, &self.index).unwrap();
+    pub fn serialize<W: std::io::Write>(&self, wrt: W) -> io::Result<()> {
+        ciborium::ser::into_writer(&self.index, wrt).unwrap();
         Ok(())
     }
 }