diff --git a/crates/foldback-core/Cargo.toml b/crates/foldback-core/Cargo.toml
index 72135fd..b8aae23 100644
--- a/crates/foldback-core/Cargo.toml
+++ b/crates/foldback-core/Cargo.toml
@@ -8,7 +8,7 @@ repository.workspace = true
 [dependencies]
 xxhash-rust = { version = "0.8", features = ["xxh3"] }
 zstd = "0.14"
-thiserror = "1"
+thiserror = "2"
 tungstenite = { version = "0.30", optional = true }
 serde = { version = "1", features = ["derive"], optional = true }
 serde_json = { version = "1", optional = true }
diff --git a/crates/foldback-core/fuzz/Cargo.lock b/crates/foldback-core/fuzz/Cargo.lock
index 6728a62..6254def 100644
--- a/crates/foldback-core/fuzz/Cargo.lock
+++ b/crates/foldback-core/fuzz/Cargo.lock
@@ -124,9 +124,9 @@ checksum = "f8fadd59c855ef2080decdef8ff161eb6661b86933c9d82e5ba29dc602a55aba"
 
 [[package]]
 name = "syn"
-version = "2.0.119"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "872831b642d1a07999a962a351ed35b955ea2cfc8f3862091e2a240a84f17297"
+checksum = "12df2e0110f65b775f769bb17ef989067a1d931b2eb822bd4346631eeada89f9"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -135,18 +135,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.69"
+version = "2.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
+checksum = "ec86235f5fcc2a73650310756d2ac5b138a5780bbbdfae3eeccec992c435ba4f"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.69"
+version = "2.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
+checksum = "bc04cd3e1236dd4a98afca4569f2deb3f120e5422a4023be2cb683f8486292af"
 dependencies = [
  "proc-macro2",
  "quote",