diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 3fef867f1..1186cc5b5 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -5301,9 +5301,9 @@ 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",
 ]
@@ -5319,9 +5319,9 @@ dependencies = [
 
 [[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/rust/headless-client/Cargo.toml b/rust/headless-client/Cargo.toml
index 884da9c48..29f422b6c 100644
--- a/rust/headless-client/Cargo.toml
+++ b/rust/headless-client/Cargo.toml
@@ -21,7 +21,7 @@ ip_network = { version = "0.4", default-features = false }
 phoenix-channel = { workspace = true }
 rustls = { workspace = true }
 secrecy = { workspace = true }
-serde = { version = "1.0.204", features = ["derive"] }
+serde = { version = "1.0.209", features = ["derive"] }
 serde_json = "1.0.125"
 thiserror = { version = "1.0", default-features = false }
 # This actually relies on many other features in Tokio, so this will probably
diff --git a/rust/phoenix-channel/Cargo.toml b/rust/phoenix-channel/Cargo.toml
index acb02ed3f..b53de49cb 100644
--- a/rust/phoenix-channel/Cargo.toml
+++ b/rust/phoenix-channel/Cargo.toml
@@ -12,7 +12,7 @@ hex = "0.4"
 libc = "0.2"
 rand_core = "0.6.4"
 secrecy = { workspace = true }
-serde = { version = "1.0.204", features = ["derive"] }
+serde = { version = "1.0.209", features = ["derive"] }
 serde_json = "1.0.125"
 sha2 = "0.10.8"
 socket-factory = { workspace = true }
diff --git a/rust/relay/Cargo.toml b/rust/relay/Cargo.toml
index 0e6812405..632ba6bdd 100644
--- a/rust/relay/Cargo.toml
+++ b/rust/relay/Cargo.toml
@@ -25,7 +25,7 @@ proptest = { version = "1", optional = true }
 rand = "0.8.5"
 rustls = { workspace = true }
 secrecy = { workspace = true }
-serde = { version = "1.0.204", features = ["derive"] }
+serde = { version = "1.0.209", features = ["derive"] }
 sha2 = "0.10.8"
 smallvec = "1.13.2"
 socket-factory = { workspace = true }