diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 8e14d8554..d467589d8 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -5567,9 +5567,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.116"
+version = "1.0.117"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e17db7126d17feb94eb3fad46bf1a96b034e8aacbc2e775fe81505f8b0b2813"
+checksum = "455182ea6142b14f93f4bc5320a2b31c1f266b66a4a5c858b013302a5d8cbfc3"
 dependencies = [
  "indexmap 2.2.6",
  "itoa 1.0.11",
diff --git a/rust/headless-client/Cargo.toml b/rust/headless-client/Cargo.toml
index 7e62c2fd9..f5e00486c 100644
--- a/rust/headless-client/Cargo.toml
+++ b/rust/headless-client/Cargo.toml
@@ -18,7 +18,7 @@ git-version = "0.3.9"
 humantime = "2.1"
 secrecy = { workspace = true }
 serde = { version = "1.0.203", features = ["derive"] }
-serde_json = "1.0.115"
+serde_json = "1.0.117"
 # This actually relies on many other features in Tokio, so this will probably
 # fail to build outside the workspace. <https://github.com/firezone/firezone/pull/4328#discussion_r1540342142>
 tokio = { version = "1.36.0", features = ["macros", "signal"] }
diff --git a/rust/phoenix-channel/Cargo.toml b/rust/phoenix-channel/Cargo.toml
index 728e936a7..eb1ad84ef 100644
--- a/rust/phoenix-channel/Cargo.toml
+++ b/rust/phoenix-channel/Cargo.toml
@@ -15,7 +15,7 @@ serde = { version = "1.0.203", features = ["derive"] }
 tracing = { workspace = true }
 rand_core = "0.6.4"
 url = "2.4.1"
-serde_json = "1.0.116"
+serde_json = "1.0.117"
 thiserror = "1.0.61"
 tokio = { version = "1.36.0", features = ["net", "time"] }
 backoff = "0.4.0"