diff --git a/Cargo.lock b/Cargo.lock
index 32b5f4af88..22217f3cb9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1599,6 +1599,7 @@ dependencies = [
  "schemars",
  "serde",
  "serde_json",
+ "thiserror",
  "tokio",
  "validator-client",
 ]
diff --git a/explorer-api/Cargo.toml b/explorer-api/Cargo.toml
index cf97221de4..f9c043bae4 100644
--- a/explorer-api/Cargo.toml
+++ b/explorer-api/Cargo.toml
@@ -20,6 +20,7 @@ okapi = { version = "0.6.0-alpha-1", features = ["derive_json_schema"] }
 rocket_okapi = "0.7.0-alpha-1"
 log = "0.4.0"
 pretty_env_logger = "0.4.0"
+thiserror = "1.0.29"
 
 mixnet-contract = { path = "../common/mixnet-contract" }
 network-defaults = { path = "../common/network-defaults" }