diff --git a/Cargo.lock b/Cargo.lock
index 99f929afc36..f22e30f4171 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -13060,22 +13060,22 @@ checksum = "949517c0cf1bf4ee812e2e07e08ab448e3ae0d23472aee8a06c985f0c8815b16"
 
 [[package]]
 name = "thiserror"
-version = "1.0.38"
+version = "1.0.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a9cd18aa97d5c45c6603caea1da6628790b37f7a34b6ca89522331c5180fed0"
+checksum = "978c9a314bd8dc99be594bc3c175faaa9794be04a5a5e153caba6915336cebac"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.38"
+version = "1.0.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fb327af4685e4d03fa8cbcf1716380da910eeb2bb8be417e7f9fd3fb164f36f"
+checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.109",
+ "syn 2.0.9",
 ]
 
 [[package]]
diff --git a/client/relay-chain-interface/Cargo.toml b/client/relay-chain-interface/Cargo.toml
index 9583d78b613..11d0f6d96a6 100644
--- a/client/relay-chain-interface/Cargo.toml
+++ b/client/relay-chain-interface/Cargo.toml
@@ -16,6 +16,6 @@ sc-client-api = { git = "https://github.com/paritytech/substrate", branch = "mas
 
 futures = "0.3.27"
 async-trait = "0.1.68"
-thiserror = "1.0.38"
+thiserror = "1.0.40"
 jsonrpsee-core = "0.16.2"
 parity-scale-codec = "3.4.0"