diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index 35424d822ad..6c600be012c 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -1323,7 +1323,7 @@ dependencies = [
  "codex-app-server-protocol",
  "codex-protocol",
  "eventsource-stream",
- "opentelemetry",
+ "opentelemetry 0.30.0",
  "opentelemetry-otlp",
  "opentelemetry-semantic-conventions",
  "opentelemetry_sdk",
@@ -4182,13 +4182,22 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "opentelemetry"
+version = "0.31.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b84bcd6ae87133e903af7ef497404dda70c60d0ea14895fc8a5e6722754fc2a0"
+dependencies = [
+ "js-sys",
+]
+
 [[package]]
 name = "opentelemetry-appender-tracing"
-version = "0.30.1"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e68f63eca5fad47e570e00e893094fc17be959c80c79a7d6ec1abdd5ae6ffc16"
+checksum = "ef6a1ac5ca3accf562b8c306fa8483c85f4390f768185ab775f242f7fe8fdcc2"
 dependencies = [
- "opentelemetry",
+ "opentelemetry 0.31.0",
  "tracing",
  "tracing-core",
  "tracing-subscriber",
@@ -4203,7 +4212,7 @@ dependencies = [
  "async-trait",
  "bytes",
  "http",
- "opentelemetry",
+ "opentelemetry 0.30.0",
  "reqwest",
 ]
 
@@ -4214,7 +4223,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dbee664a43e07615731afc539ca60c6d9f1a9425e25ca09c57bc36c87c55852b"
 dependencies = [
  "http",
- "opentelemetry",
+ "opentelemetry 0.30.0",
  "opentelemetry-http",
  "opentelemetry-proto",
  "opentelemetry_sdk",
@@ -4235,7 +4244,7 @@ checksum = "2e046fd7660710fe5a05e8748e70d9058dc15c94ba914e7c4faa7c728f0e8ddc"
 dependencies = [
  "base64",
  "hex",
- "opentelemetry",
+ "opentelemetry 0.30.0",
  "opentelemetry_sdk",
  "prost",
  "serde",
@@ -4257,7 +4266,7 @@ dependencies = [
  "futures-channel",
  "futures-executor",
  "futures-util",
- "opentelemetry",
+ "opentelemetry 0.30.0",
  "percent-encoding",
  "rand 0.9.2",
  "serde_json",
diff --git a/codex-rs/Cargo.toml b/codex-rs/Cargo.toml
index c50c69aa3f5..4b0a2cf7338 100644
--- a/codex-rs/Cargo.toml
+++ b/codex-rs/Cargo.toml
@@ -143,7 +143,7 @@ nucleo-matcher = "0.3.1"
 once_cell = "1"
 openssl-sys = "*"
 opentelemetry = "0.30.0"
-opentelemetry-appender-tracing = "0.30.0"
+opentelemetry-appender-tracing = "0.31.1"
 opentelemetry-otlp = "0.30.0"
 opentelemetry-semantic-conventions = "0.30.0"
 opentelemetry_sdk = "0.30.0"