diff --git a/Cargo.lock b/Cargo.lock
index f42ef6b8..3d4fc596 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1860,7 +1860,7 @@ dependencies = [
  "quote",
  "sha2",
  "syn 2.0.104",
- "thiserror 1.0.69",
+ "thiserror 2.0.12",
 ]
 
 [[package]]
diff --git a/discriminator/syn/Cargo.toml b/discriminator/syn/Cargo.toml
index e3c5f6b5..b72982fb 100644
--- a/discriminator/syn/Cargo.toml
+++ b/discriminator/syn/Cargo.toml
@@ -12,7 +12,7 @@ proc-macro2 = "1.0"
 quote = "1.0"
 sha2 = "0.10"
 syn = { version = "2.0", features = ["full"] }
-thiserror = "1.0"
+thiserror = "2.0"
 
 [lib]
 crate-type = ["lib"]