diff --git a/Cargo.lock b/Cargo.lock
index 3902757..3630bf7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -235,7 +235,7 @@ dependencies = [
  "serde_with",
  "sha3",
  "static_assertions",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -452,7 +452,7 @@ dependencies = [
  "sled-hardware-types",
  "slog",
  "slog-error-chain 0.1.0 (git+https://github.com/oxidecomputer/slog-error-chain?branch=main)",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "tokio",
  "uuid",
  "vsss-rs",
@@ -681,7 +681,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fa961b519f0b462e3a3b4a34b64d119eeaca1d59af726fe450bbba07a9fc0a1"
 dependencies = [
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -813,7 +813,7 @@ dependencies = [
  "libc",
  "num-derive",
  "num-traits",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -1027,7 +1027,7 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "10d60334b3b2e7c9d91ef8150abfb6fa4c1c39ebbcf4a81c2e346aad939fee3e"
 dependencies = [
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -1139,7 +1139,7 @@ dependencies = [
  "hubpack",
  "serde",
  "serde-big-array",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "x509-cert",
  "zerocopy",
 ]
@@ -1152,7 +1152,7 @@ dependencies = [
  "const-oid 0.9.6",
  "slog",
  "slog-error-chain 0.1.0 (git+https://github.com/oxidecomputer/slog-error-chain?rev=15f69041f45774602108e47fb25e705dc23acfb2)",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "x509-cert",
 ]
 
@@ -1176,7 +1176,7 @@ dependencies = [
  "sled-agent-types-versions",
  "slog",
  "tempfile",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "tokio",
  "x509-cert",
 ]
@@ -1236,7 +1236,7 @@ dependencies = [
  "libdlpi-sys",
  "num_enum 0.7.5",
  "pretty-hex",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -1249,7 +1249,7 @@ dependencies = [
  "pretty-hex",
  "serde",
  "serde_json",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "zerocopy",
 ]
 
@@ -1294,7 +1294,7 @@ dependencies = [
  "slog-bunyan",
  "slog-json",
  "slog-term",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "tokio",
  "tokio-rustls 0.25.0",
  "toml 0.9.11+spec-1.1.0",
@@ -1327,7 +1327,7 @@ checksum = "dc09b90bda5770641457f1c0a42c8203c48f5a3d9799dcf1bafbd84e30ccf080"
 dependencies = [
  "pest",
  "pest_derive",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -1687,7 +1687,7 @@ dependencies = [
  "secrecy",
  "serde",
  "subtle",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "zeroize",
 ]
 
@@ -2211,7 +2211,7 @@ dependencies = [
  "slog-error-chain 0.1.0 (git+https://github.com/oxidecomputer/slog-error-chain?branch=main)",
  "slog-term",
  "smf",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "tofino",
  "tokio",
  "uuid",
@@ -2443,7 +2443,7 @@ dependencies = [
  "chumsky",
  "knus-derive",
  "miette",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "unicode-width 0.2.2",
 ]
 
@@ -2513,7 +2513,7 @@ dependencies = [
  "rand 0.9.2",
  "rusty-doors",
  "socket2",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "tracing",
  "winnow 0.7.14",
 ]
@@ -2966,7 +2966,7 @@ dependencies = [
  "slog",
  "slog-error-chain 0.1.0 (git+https://github.com/oxidecomputer/slog-error-chain?branch=main)",
  "strum 0.27.2",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "tokio",
  "tufaceous-artifact",
  "uuid",
@@ -2984,7 +2984,7 @@ dependencies = [
  "secrecy",
  "serde",
  "serde_with",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -3071,7 +3071,7 @@ dependencies = [
  "oxide-vpc",
  "postcard",
  "serde",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -3534,7 +3534,7 @@ dependencies = [
  "serde",
  "serde_json",
  "syn 2.0.114",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "typify",
  "unicode-ident",
 ]
@@ -3556,7 +3556,7 @@ dependencies = [
  "serde",
  "serde_json",
  "syn 2.0.114",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "typify",
  "unicode-ident",
 ]
@@ -3693,7 +3693,7 @@ dependencies = [
  "rustc-hash",
  "rustls 0.23.36",
  "socket2",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "tokio",
  "tracing",
  "web-time",
@@ -3714,7 +3714,7 @@ dependencies = [
  "rustls 0.23.36",
  "rustls-pki-types",
  "slab",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "tinyvec",
  "tracing",
  "web-time",
@@ -3829,7 +3829,7 @@ dependencies = [
  "serde",
  "serde_with",
  "strum 0.26.3",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -4648,7 +4648,7 @@ dependencies = [
  "slog-error-chain 0.1.0 (git+https://github.com/oxidecomputer/slog-error-chain?branch=main)",
  "strum 0.27.2",
  "swrite",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "toml 0.8.23",
  "tufaceous-artifact",
  "uuid",
@@ -4682,7 +4682,7 @@ dependencies = [
  "sled-hardware-types",
  "slog",
  "strum 0.27.2",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "trust-quorum-types-versions",
  "tufaceous-artifact",
  "uuid",
@@ -4700,7 +4700,7 @@ dependencies = [
  "schemars 0.8.22",
  "serde",
  "slog",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -5162,11 +5162,11 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.17"
+version = "2.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
+checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4"
 dependencies = [
- "thiserror-impl 2.0.17",
+ "thiserror-impl 2.0.18",
 ]
 
 [[package]]
@@ -5182,9 +5182,9 @@ dependencies = [
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.17"
+version = "2.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
+checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -5600,7 +5600,7 @@ dependencies = [
  "sled-hardware-types",
  "slog",
  "slog-error-chain 0.1.0 (git+https://github.com/oxidecomputer/slog-error-chain?branch=main)",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -5623,7 +5623,7 @@ dependencies = [
  "serde_human_bytes",
  "strum 0.26.3",
  "test-strategy",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -5677,7 +5677,7 @@ dependencies = [
  "serde",
  "serde_json",
  "syn 2.0.114",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "unicode-ident",
 ]
 
@@ -5812,7 +5812,7 @@ dependencies = [
  "serde",
  "serde_json",
  "syn 2.0.114",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
  "thread-id",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 5951fa4..ddb5ffc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -58,7 +58,7 @@ slog-term = "2.9.2"
 static_assertions = { version = "1.1.0", default-features = false }
 string-error = "0.1"
 tempfile = { version = "3.27.0", default-features = false }
-thiserror = { version = "2.0.17", default-features = false }
+thiserror = { version = "2.0.18", default-features = false }
 tokio = { version = "1.47", default-features = false }
 x509-cert = { version = "0.2.5", default-features = false }
 yubihsm = { git = "https://github.com/oxidecomputer/yubihsm.rs", branch="v0.42.0-with-audit", features = ["default", "usb"] }