diff --git a/Cargo.lock b/Cargo.lock
index 1af93bbb..587059f8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -246,7 +246,7 @@ dependencies = [
  "pretty-hex",
  "serde",
  "serde_json",
- "thiserror",
+ "thiserror 2.0.3",
  "zerocopy",
 ]
 
@@ -257,7 +257,7 @@ dependencies = [
  "pest",
  "pest_derive",
  "rstest",
- "thiserror",
+ "thiserror 2.0.3",
 ]
 
 [[package]]
@@ -570,7 +570,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "879952a81a83930934cbf1786752d6dedc3b1f29e8f8fb2ad1d0a36f377cf442"
 dependencies = [
  "memchr",
- "thiserror",
+ "thiserror 1.0.69",
  "ucd-trie",
 ]
 
@@ -985,18 +985,38 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.68"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02dd99dc800bbb97186339685293e1cc5d9df1f8fae2d0aecd9ff1c77efea892"
+checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
 dependencies = [
- "thiserror-impl",
+ "thiserror-impl 1.0.69",
+]
+
+[[package]]
+name = "thiserror"
+version = "2.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c006c85c7651b3cf2ada4584faa36773bd07bac24acfb39f3c431b36d7e667aa"
+dependencies = [
+ "thiserror-impl 2.0.3",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.68"
+version = "2.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a7c61ec9a6f64d2793d8a45faba21efbe3ced62a886d44c36a009b2b519b4c7e"
+checksum = "f077553d607adc1caf65430528a576c757a71ed73944b66ebb58ef2bbd243568"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1159,7 +1179,7 @@ dependencies = [
  "serde",
  "serde_json",
  "syn",
- "thiserror",
+ "thiserror 2.0.3",
  "thread-id",
 ]
 
diff --git a/dof/Cargo.toml b/dof/Cargo.toml
index 35f34c54..70eb3155 100644
--- a/dof/Cargo.toml
+++ b/dof/Cargo.toml
@@ -9,7 +9,7 @@ repository = "https://github.com/oxidecomputer/usdt.git"
 [dependencies]
 goblin = { version = "0.9", optional = true, features = ["elf64", "mach64"] }
 pretty-hex = { version = "0.4", optional = true }
-thiserror = "1"
+thiserror = "2"
 zerocopy = { version = "0.8.9", features = [ "derive" ] }
 serde = { version = "1", features = [ "derive" ] }
 serde_json = "1"
diff --git a/dtrace-parser/Cargo.toml b/dtrace-parser/Cargo.toml
index 87f5841c..72b73fcd 100644
--- a/dtrace-parser/Cargo.toml
+++ b/dtrace-parser/Cargo.toml
@@ -9,7 +9,7 @@ repository = "https://github.com/oxidecomputer/usdt.git"
 [dependencies]
 pest = "2.7.14"
 pest_derive = "2.7.14"
-thiserror = "1.0.68"
+thiserror = "2.0.3"
 
 [dev-dependencies]
 rstest = "0.22.0"
diff --git a/usdt-impl/Cargo.toml b/usdt-impl/Cargo.toml
index d347c06e..36d5b9e6 100644
--- a/usdt-impl/Cargo.toml
+++ b/usdt-impl/Cargo.toml
@@ -15,7 +15,7 @@ quote = "1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 syn = { version = "2", features = ["full", "extra-traits"] }
-thiserror = "1"
+thiserror = "2"
 thread-id = "4"
 
 [target.'cfg(target_os = "macos")'.dependencies]