diff --git a/Cargo.lock b/Cargo.lock
index 6f84e1e..104a8ba 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1739,18 +1739,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.204"
+version = "1.0.209"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc76f558e0cbb2a839d37354c575f1dc3fdc6546b5be373ba43d95f231bf7c12"
+checksum = "99fce0ffe7310761ca6bf9faf5115afbc19688edd00171d81b1bb1b116c63e09"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.204"
+version = "1.0.209"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0cd7e117be63d3c3678776753929474f3b04a43a080c744d6b0ae2a8c28e222"
+checksum = "a5831b979fd7b5439637af1752d535ff49f4860c0f341d1baeb6faf0f4242170"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index 0a250d9..7143d90 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ crate-type = ["cdylib"]
 [dependencies]
 pyo3 = { version = "0.22.2", features = ["extension-module", "anyhow"] }
 rayon = "1.10.0"
-serde = { version = "1.0.204", features = ["derive"] }
+serde = { version = "1.0.209", features = ["derive"] }
 sourmash = { version = "0.15.0"}
 serde_json = "1.0.120"
 niffler = "2.4.0"