diff --git a/Cargo.lock b/Cargo.lock
index 6ed0bc30..ae19a0c3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -305,7 +305,7 @@ dependencies = [
  "rustc-hash 2.1.0",
  "syntax",
  "test-utils",
- "thiserror 2.0.3",
+ "thiserror 2.0.9",
  "url",
 ]
 
@@ -1627,11 +1627,11 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "2.0.3"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c006c85c7651b3cf2ada4584faa36773bd07bac24acfb39f3c431b36d7e667aa"
+checksum = "f072643fd0190df67a8bab670c20ef5d8737177d6ac6b2e9a236cb096206b2cc"
 dependencies = [
- "thiserror-impl 2.0.3",
+ "thiserror-impl 2.0.9",
 ]
 
 [[package]]
@@ -1647,9 +1647,9 @@ dependencies = [
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.3"
+version = "2.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f077553d607adc1caf65430528a576c757a71ed73944b66ebb58ef2bbd243568"
+checksum = "7b50fa271071aae2e6ee85f842e2e28ba8cd2c5fb67f11fcb1fd70b276f9e7d4"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/crates/commands/Cargo.toml b/crates/commands/Cargo.toml
index 6a1123c5..8bc59831 100644
--- a/crates/commands/Cargo.toml
+++ b/crates/commands/Cargo.toml
@@ -17,7 +17,7 @@ log.workspace = true
 rowan.workspace = true
 rustc-hash.workspace = true
 syntax = { path = "../syntax" }
-thiserror = "2.0.3"
+thiserror = "2.0.9"
 url.workspace = true
 
 [dev-dependencies]