diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index 7940e4cbeb1..52ca9134e97 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -891,7 +891,7 @@ dependencies = [
  "pretty_assertions",
  "similar",
  "tempfile",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tree-sitter",
  "tree-sitter-bash",
 ]
@@ -1031,7 +1031,7 @@ dependencies = [
  "diffy",
  "serde",
  "serde_json",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
 ]
 
 [[package]]
@@ -1103,7 +1103,7 @@ dependencies = [
  "strum_macros 0.27.2",
  "tempfile",
  "test-log",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "time",
  "tokio",
  "tokio-test",
@@ -1216,7 +1216,7 @@ dependencies = [
  "schemars 0.8.22",
  "serde",
  "tempfile",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "ts-rs",
  "walkdir",
 ]
@@ -1498,7 +1498,7 @@ dependencies = [
  "codex-utils-cache",
  "image",
  "tempfile",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tokio",
 ]
 
@@ -1526,7 +1526,7 @@ version = "0.0.0"
 dependencies = [
  "assert_matches",
  "async-trait",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "time",
  "tokio",
 ]
@@ -1541,7 +1541,7 @@ version = "0.0.0"
 dependencies = [
  "anyhow",
  "pretty_assertions",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tiktoken-rs",
 ]
 
@@ -3480,7 +3480,7 @@ checksum = "b3d2ef408b88e913bfc6594f5e693d57676f6463ded7d8bf994175364320c706"
 dependencies = [
  "enumflags2",
  "libc",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
 ]
 
 [[package]]
@@ -4160,7 +4160,7 @@ dependencies = [
  "futures-sink",
  "js-sys",
  "pin-project-lite",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tracing",
 ]
 
@@ -4203,7 +4203,7 @@ dependencies = [
  "prost",
  "reqwest",
  "serde_json",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tokio",
  "tonic",
  "tracing",
@@ -4243,7 +4243,7 @@ dependencies = [
  "percent-encoding",
  "rand 0.9.2",
  "serde_json",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tokio",
  "tokio-stream",
 ]
@@ -4674,7 +4674,7 @@ dependencies = [
  "rustc-hash 2.1.1",
  "rustls",
  "socket2 0.6.0",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tokio",
  "tracing",
  "web-time",
@@ -4695,7 +4695,7 @@ dependencies = [
  "rustls",
  "rustls-pki-types",
  "slab",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tinyvec",
  "tracing",
  "web-time",
@@ -4856,7 +4856,7 @@ checksum = "dd6f9d3d47bdd2ad6945c5015a226ec6155d0bcdfd8f7cd29f86b71f8de99d2b"
 dependencies = [
  "getrandom 0.2.16",
  "libredox",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
 ]
 
 [[package]]
@@ -5007,7 +5007,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sse-stream",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tokio",
  "tokio-stream",
  "tokio-util",
@@ -6170,11 +6170,11 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.16"
+version = "2.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3467d614147380f2e4e374161426ff399c91084acd2363eaf549172b3d5e60c0"
+checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
 dependencies = [
- "thiserror-impl 2.0.16",
+ "thiserror-impl 2.0.17",
 ]
 
 [[package]]
@@ -6190,9 +6190,9 @@ dependencies = [
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.16"
+version = "2.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c5e1be1c48b9172ee610da68fd9cd2770e7a4056cb3fc98710ee6906f0c7960"
+checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -6672,7 +6672,7 @@ checksum = "adc5f880ad8d8f94e88cb81c3557024cf1a8b75e3b504c50481ed4f5a6006ff3"
 dependencies = [
  "regex",
  "streaming-iterator",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "tree-sitter",
 ]
 
@@ -6695,7 +6695,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6ef1b7a6d914a34127ed8e1fa927eb7088903787bcded4fa3eef8f85ee1568be"
 dependencies = [
  "serde_json",
- "thiserror 2.0.16",
+ "thiserror 2.0.17",
  "ts-rs-macros",
  "uuid",
 ]
diff --git a/codex-rs/Cargo.toml b/codex-rs/Cargo.toml
index 1d6c937e8aa..fa7adb62bfc 100644
--- a/codex-rs/Cargo.toml
+++ b/codex-rs/Cargo.toml
@@ -179,7 +179,7 @@ sys-locale = "0.3.2"
 tempfile = "3.23.0"
 test-log = "0.2.18"
 textwrap = "0.16.2"
-thiserror = "2.0.16"
+thiserror = "2.0.17"
 time = "0.3"
 tiny_http = "0.12"
 tokio = "1"
diff --git a/codex-rs/cloud-tasks-client/Cargo.toml b/codex-rs/cloud-tasks-client/Cargo.toml
index ca45b6e15b5..242a72c3e48 100644
--- a/codex-rs/cloud-tasks-client/Cargo.toml
+++ b/codex-rs/cloud-tasks-client/Cargo.toml
@@ -22,6 +22,6 @@ chrono = { version = "0.4", features = ["serde"] }
 diffy = "0.4.2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-thiserror = "2.0.12"
+thiserror = "2.0.17"
 codex-backend-client = { path = "../backend-client", optional = true }
 codex-git-apply = { path = "../git-apply" }