diff --git a/Cargo.lock b/Cargo.lock
index 043f5ad..e9bae56 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -406,7 +406,7 @@ dependencies = [
  "serde",
  "serde_json",
  "tempfile",
- "thiserror 1.0.69",
+ "thiserror",
  "toml",
  "walkdir",
 ]
@@ -422,7 +422,7 @@ dependencies = [
  "serde",
  "serde_json",
  "tempfile",
- "thiserror 1.0.69",
+ "thiserror",
  "tokio",
  "tracing",
  "tracing-subscriber",
@@ -801,7 +801,7 @@ dependencies = [
  "rust-mcp-transport",
  "serde",
  "serde_json",
- "thiserror 2.0.17",
+ "thiserror",
  "time",
  "tokio",
  "tracing",
@@ -820,7 +820,7 @@ dependencies = [
  "rust-mcp-schema",
  "serde",
  "serde_json",
- "thiserror 2.0.17",
+ "thiserror",
  "tokio",
  "tokio-stream",
  "tracing",
@@ -1036,33 +1036,13 @@ dependencies = [
  "unicode-width 0.2.2",
 ]
 
-[[package]]
-name = "thiserror"
-version = "1.0.69"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
-dependencies = [
- "thiserror-impl 1.0.69",
-]
-
 [[package]]
 name = "thiserror"
 version = "2.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
 dependencies = [
- "thiserror-impl 2.0.17",
-]
-
-[[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",
+ "thiserror-impl",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 40acfc5..41f970d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ description = "A language for describing and enforcing software structure"
 
 [workspace.dependencies]
 # Core dependencies
-thiserror = "1.0"
+thiserror = "2.0"
 miette = { version = "7.0", features = ["fancy"] }
 logos = "0.14"
 serde = { version = "1.0", features = ["derive"] }